Why do I get a connection error when installing or activating MATLAB or another MathWorks product?

I get an error that I cannot connect to MathWorks when running the MathWorks installer or the activation client; however, I can access the website. Why can't the MathWorks Installer or activation client connect to the MathWorks?

Connection Error
The application could not connect to MathWorks.
For more information on resolving this issue, see this Support Article.

Answer 1

[MathWorks Support Team]

Computer Security software is preventing the MathWorks Installer from connecting to the MathWorks servers. This is known as a connection issue due one or more of the following:

• Antivirus Software
• Proxy
• Firewall

Antivirus Software

To temporarily disable your Antivirus on Windows:

1. Locate the Antivirus protection program icon on the Windows system tray.
2. Right-click the icon and select Disable, Stop, etc. to temporarily disable the program. In some cases, you may need to open the program and disable it using the program's menus.

To temporarily disable your Antivirus on a Mac:

1. Locate the Antivirus icon found on your Mac menu bar.
2. Click Shut down or disable temporarily until installation and activation have completed.

To temporarily disable your Antivirus on a Linux:

1. Locate the Antivirus protection program icon on the Linux system tray.
2. Click Shut down or disable temporarily until installation and activation have completed.

Proxy

The MATLAB installer, activation client and update installer will try to automatically inherit your computer's proxy settings on Windows. If this process fails, you may need to manually enter your settings using the "connection settings" button on the first screen of the installer or activation client. The update installer will not allow you to enter your proxy credentials as it automatically inherits your computer's proxy settings. On Mac and Linux, you will always need to enter these settings manually.

To disable your Proxy in Internet Explorer:

1. Click the Tools button and then select Internet Options.
2. Click the Connections tab and then select LAN settings.
3. Uncheck the check box for Use a proxy server for your LAN.

To disable your Proxy in Chrome:

1. Open the Customize and Control Google Chrome menu by clicking on the three-dots icon at the top right of Google Chrome, select Settings on the right, find Advanced and finally select o*pen proxy settings.*
2. Select the LAN Settings button.
3. Deselect the checkbox for Use a proxy server for your LAN.

To disable your Proxy in Safari:

1. Go to Menu and click on Preferences from the drop-down menu.
2. Select the Advanced tab and then click on the Change Settings button.
3. Deselect the checkbox for Use a proxy server for your LAN.

To disable your Proxy in Firefox:

1. Click the Tools button and select Options.
2. Go to the Advanced panel and select the Network tab.
3. Click on Settings in the Connection Section and select No Proxy.

You will need to contact your IT Help Desk to troubleshoot this issue if you don't know your proxy settings or the error persists after entering your proxy settings.

Firewall

You will need to contact your IT Help Desk if your organization is running a network firewall to configure it to bypass blocked connections to the MathWorks servers.

The MathWorks installer needs to contact MathWorks servers on the following ports and addresses:

• login.mathworks.com
• services.mathworks.com
• TCP ports 80 and 443

Your firewall needs to bypass blocked connections for both addresses over both ports. These servers do not use a Static IP Address and will resolve to a Dynamic IP Address. This means that users will not be able to white-list MathWorks servers via IP Address and will have to use the domain name.

If the MathWorks installer is still unable to connect after troubleshooting your proxy and firewall, submit a service request using the link below. Please include the troubleshooting steps you took to resolve the connection issue, and include your installation log file. See this related article if you need assistance locating your log file:

Where are the MATLAB installation log files located?

[Stewart MacLeod]

Mathworks site says it is down for planned maintenance. How can you install?

[Scott]

Hi Stewart,

The message that appears when you visit these addresses in a web browser is not accurate, as those addresses are not intended to be visited in a web browser. The activation servers are up. I apologize for any confusion caused by that message, and we are working to replace it with a more accurate message.

-Scott

MathWorks Installation & Licensing Support

[Saurabh Sharma]

While installing through the iso file which my University( BITS Pilani , India) gave me with a Activation Key(through which I got the license on the website) During installation , After I login ,Everything goes smoothly till I have to select my license . When I click next , it says cannot connect to MathWorks Server. I have tried this on R2015B release , R2015A release both. Same error. Please help.

[Rajat Mishra]

Same issue. Please help resolve. Idk whether to contact college admin or Mathworks. None of them responding anyways.

[Darsana Thulasi]

@Rajat Mishra For faster response, it is best that you contact MathWorks Support directly and create a help ticket. You may have a system specific issue, which I am sure the team should be able to help you out.

[Dalan3r]

I tried everything suggested on this page to no avail. I ended up contacting MathWorks tech-support and this is the suggestion I received,

---> It could be related to the way the network(s) you're on are configured with IPv6 and an incompatibility with the installer.

Please try running the following from a command prompt, then try the installer again.

setx _JAVA_OPTIONS -Djava.net.preferIPv4Stack=true

setx JAVA_TOOL_OPTIONS -Djava.net.preferIPv4Stack=true

- I ran those codes in command prompt, restarted the installer and everything worked like a charm!

[Hunter Halversen]

THANK YOU commands worked like a charm can confirm

[Richard del Rio]

Dalan3r Thanks, this worked for me on windows 10

[Ali Keskin]

THANK YOU commands worked :) WINDOWS7 64BIT

[Andrew McConnell]

I just clicked ok on the warning screen and tried to activate again. It seemed to work without further manual intervention.

[faizan zahoor]

Dalan3r Thanks, this worked for me on windows 10

[Walter Roberson]

Hu Tiancheng comments to Andrew McConnell:

me 2.

[Maider]

Thank you Dalan3r for sharing your solution. Took me 3h to destroy my local network and wireless trying to change setting about security firewalls, proxis, etc. Before I read a bit more into the comments! 2 seconds running those commands and all Worked! my OS is windows 10

[Jérôme Oudart]

My OS is also Windows 10 and when I try running from the wommand prompt I just get a message for an apparently false syntax for "setx" ...

[Walter Roberson]

the "setx" should be run at a Windows command prompt.

I see a site pointing out that Windows 10 has a bug in it's GUI interface for setting environment variables, with the bug fixed in the Anniversary Edition. This would not have affected setx though. http://www.winhelponline.com/blog/set-user-environment-variable-setx-windows-10/

[Lane Lombardia]

I put in the proxy information during the installation, and the installation completed without error; but I still can not get the installed application to log in, rendering it useless, unless there is a way to check the configuration files that contain this information for the application.

The installation log follows:
(Oct 20, 2017 16:32:08) ##################################################################
(Oct 20, 2017 16:32:08) #
(Oct 20, 2017 16:32:08) # Today's Date: 
(Oct 20, 2017 16:32:08) Fri Oct 20 16:32:08 EDT 2017
(Oct 20, 2017 16:32:08) 
(Oct 20, 2017 16:32:08) System Info
(Oct 20, 2017 16:32:08) OS: Mac OS X 10.11.6
(Oct 20, 2017 16:32:08) Arch: x86_64
(Oct 20, 2017 16:32:08) Data Model: 64
(Oct 20, 2017 16:32:08) Language: en
(Oct 20, 2017 16:32:08) Java Vendor: Oracle Corporation
(Oct 20, 2017 16:32:08) Java Home: /private/var/folders/15/4fygbdj12p3gl34pc4lrx29c0000gn/T/installer_835/sys/java/jre/maci64/jre
(Oct 20, 2017 16:32:08) Java Version: 1.8.0_121
(Oct 20, 2017 16:32:08) Java VM Name: Java HotSpot(TM) 64-Bit Server VM
(Oct 20, 2017 16:32:08) Java Class Path: /private/var/folders/15/4fygbdj12p3gl34pc4lrx29c0000gn/T/installer_835/java/config/professionalinstaller/pathlist.jar
(Oct 20, 2017 16:32:08) User Name: gfxeng
(Oct 20, 2017 16:32:08) Current Directory: /
(Oct 20, 2017 16:32:08) Input arguments: 
(Oct 20, 2017 16:32:08) root /private/var/folders/15/4fygbdj12p3gl34pc4lrx29c0000gn/T/installer_835
(Oct 20, 2017 16:32:08) libdir /private/var/folders/15/4fygbdj12p3gl34pc4lrx29c0000gn/T/installer_835
(Oct 20, 2017 16:32:08) psn_0_553095 true
(Oct 20, 2017 16:32:08) standalone true
(Oct 20, 2017 16:32:24) Starting local product/component search in download directory
(Oct 20, 2017 16:32:24) Searching for archives...
(Oct 20, 2017 16:32:24) Reading /private/var/folders/15/4fygbdj12p3gl34pc4lrx29c0000gn/T/installer_835/archives
(Oct 20, 2017 16:32:24) 2 files found in /private/var/folders/15/4fygbdj12p3gl34pc4lrx29c0000gn/T/installer_835/archives
(Oct 20, 2017 16:32:24) Reading /private/var/folders/15/4fygbdj12p3gl34pc4lrx29c0000gn/T/installer_835
(Oct 20, 2017 16:32:24) 17 files found in /private/var/folders/15/4fygbdj12p3gl34pc4lrx29c0000gn/T/installer_835
(Oct 20, 2017 16:32:24) /Users/spoccyl12/Downloads/MathWorks/R2017b/archives doesn't exist ... skipping.
(Oct 20, 2017 16:32:24) Archive search complete.  19 total files found.
(Oct 20, 2017 16:32:24) Completed local product/component search
(Oct 20, 2017 16:33:10) Contacting MathWorks
(Oct 20, 2017 16:33:25) Validating account information
(Oct 20, 2017 16:33:25) Retrieving license data
(Oct 20, 2017 16:33:31) Fetching settings
(Oct 20, 2017 16:33:31) Retrieving product data
(Oct 20, 2017 16:33:31) Verifying account information
(Oct 20, 2017 16:33:34) Completed local product/component search
(Oct 20, 2017 16:33:34) Retrieving license data
(Oct 20, 2017 16:33:34) Default Installation Folder: /Applications
(Oct 20, 2017 16:33:44) Confirmation Text: 
Installation folder:
/Applications/MATLAB_R2017b.app

Download Size: 2,956 MB
Installation Size: 8,187 MB

Products:
MATLAB 9.3 (download)
Bioinformatics Toolbox 4.9 (download)
Curve Fitting Toolbox 3.5.6 (download)
Global Optimization Toolbox 3.4.3 (download)
Image Processing Toolbox 10.1 (download)
Instrument Control Toolbox 3.12 (download)
Optimization Toolbox 8.0 (download)
Parallel Computing Toolbox 6.11 (download)
Signal Processing Toolbox 7.5 (download)
SimBiology 5.7 (download)
Statistics and Machine Learning Toolbox 11.2 (download)

(Oct 20, 2017 16:33:45) Starting Download: MATLAB 9.3 : 1,004,668,042 bytes
(Oct 20, 2017 16:35:06) Starting Download: Bioinformatics Toolbox 4.9 : 186,318,623 bytes
(Oct 20, 2017 16:35:11) Starting Download: Curve Fitting Toolbox 3.5.6 : 17,805,608 bytes
(Oct 20, 2017 16:35:13) Starting Download: Global Optimization Toolbox 3.4.3 : 10,772,555 bytes
(Oct 20, 2017 16:35:14) Starting Download: Image Processing Toolbox 10.1 : 907,193,788 bytes
(Oct 20, 2017 16:35:47) Starting Download: Instrument Control Toolbox 3.12 : 9,296,793 bytes
(Oct 20, 2017 16:35:47) Starting Download: Optimization Toolbox 8.0 : 24,245,843 bytes
(Oct 20, 2017 16:35:48) Starting Download: Parallel Computing Toolbox 6.11 : 179,844,453 bytes
(Oct 20, 2017 16:35:58) Starting Download: Signal Processing Toolbox 7.5 : 327,597,138 bytes
(Oct 20, 2017 16:36:08) Starting Download: SimBiology 5.7 : 46,742,761 bytes
(Oct 20, 2017 16:36:10) Starting Download: Statistics and Machine Learning Toolbox 11.2 : 385,321,337 bytes
(Oct 20, 2017 16:36:17) Installing Product: MATLAB 9.3
(Oct 20, 2017 16:37:19) Installing Product: Bioinformatics Toolbox 4.9
(Oct 20, 2017 16:37:23) Installing Product: Curve Fitting Toolbox 3.5.6
(Oct 20, 2017 16:37:24) Installing Product: Global Optimization Toolbox 3.4.3
(Oct 20, 2017 16:37:25) Installing Product: Image Processing Toolbox 10.1
(Oct 20, 2017 16:37:47) Installing Product: Instrument Control Toolbox 3.12
(Oct 20, 2017 16:37:48) Installing Product: Optimization Toolbox 8.0
(Oct 20, 2017 16:37:49) Installing Product: Parallel Computing Toolbox 6.11
(Oct 20, 2017 16:37:55) Installing Product: Signal Processing Toolbox 7.5
(Oct 20, 2017 16:38:12) Installing Product: SimBiology 5.7
(Oct 20, 2017 16:38:17) Installing Product: Statistics and Machine Learning Toolbox 11.2
(Oct 20, 2017 16:38:29) Updating file associations at /Applications/MATLAB_R2017b.app
(Oct 20, 2017 16:38:29) Successfully updated file associations at /Applications/MATLAB_R2017b.app
(Oct 20, 2017 16:38:35) Notes: 
Your installation may require additional configuration steps.

1. To accelerate computations with the following products, a supported compiler is required:

SimBiology 5.7
(Oct 20, 2017 16:41:51) Exiting with status 0
(Oct 20, 2017 16:41:51) End - Successful.

[Subash Patel]

Weird that the error goes away on my VPN and not on home internet without any firewall.

[Nec]

Same. VPN works for me. TY!

[John Qu]

The users in China mainland need to connect VPN which is limited by CCP

[David Robles]

Hilarious!!! VPN was the easy fix. Thanks guys!

[MANDY LYNN]

for Mac, if you use chrome as your default browser, try to reset safari as your default browser. as for my computer, it works.

[ew1124]

It worked for me too. Thanks!

[jiaze li]

it works for me, thx!

[anjing cheng]

对我的没用55555

[THAILEANG TOUCH]

It worked like magic. Thanks!

[Sebastien]

_____________________________________________________________

Firewall

You will need to contact your IT Help Desk if your organization is running a network firewall to configure it to bypass blocked connections to the MathWorks servers.

The MathWorks installer needs to contact MathWorks servers on the following ports and addresses:

• login.mathworks.com
• services.mathworks.com
• TCP ports 80 and 443

_____________________________________________________________

Firewalls generally use static configuration based on IP. You can still enter a FQDN at first but the firewall will resolve once when declaring the rule at the first time and will not refresh the rule afterwards.

For instance, last year in septembre we allowed these three IPs on TCP/443:

login.mathworks.com is an alias for login.wsroute.mathworks.com.
login.wsroute.mathworks.com has address 52.211.100.21
login.wsroute.mathworks.com has address 34.249.255.69

services.mathworks.com is an alias for services.mathworks.com.edgekey.net.
services.mathworks.com.edgekey.net is an alias for e1597.b.akamaiedge.net.
e1597.b.akamaiedge.net has address 23.38.74.164

Today (november, 2019) we have to update firewall rules to match these ones:

login.mathworks.com is an alias for login.wsroute.mathworks.com.
login.wsroute.mathworks.com has address 54.246.157.59
login.wsroute.mathworks.com has address 52.19.137.137

ervices.mathworks.com is an alias for services.mathworks.com.edgekey.net.
services.mathworks.com.edgekey.net is an alias for e1597.b.akamaiedge.net.
e1597.b.akamaiedge.net has address 104.80.20.48

So our wish is that MatLab's hosts will remain on the same IPs as long as possible...

[chunyan jia]

it works,so great

[Nkateko Vukeya]

thanks, it worked :)

[xuebin Chen]

thanks

[MARIO CHANG]

None of the ‘fixes’ mentioned above fixed the error on Catalina OSX. The Proxy setting checkbox doesn’t even exist.

Was able to install R2020a with this procedure:

1. Download installation folder using another computer 2. Copy folder to desired computer 3. Edit ‘installer_input.txt’ per instructions in ‘installer_input.txt’ 4. From terminal, run the ‘install’ unix executable. Note that install is also a built-in OSX command, so must invoke the unix executable using full path.

For example: /Users/username/Downloads/Matlab/R2020a/install -inputFile editedfile.txt

[Andrea Silvestro]

MARIO CHANG could you help me? I do not understand your explanation. What is the installation folder? I do not have access to another Mac.

[Avinash Potnuru]

still it's showing the same error for me.

Answer 2

[Sean]

When I received this error, it was not due to proxy settings or firewall settings. Rather, when I downloaded the installer, the download location was on a remote drive (a windows remote profile DFS location). I copied the setup file to the local drive, and it ran fine.

[Dan Polasky]

Similar here - got this error with many internet connection settings when running the installer from my user desktop. Moved the installer to the local drive (C:) and ran with admin privileges and it worked fine.

[Cameron Hess]

Can anyone from MathWorks explain why the installer for many releases of MATLAB inaccurately complains about proxy servers when run from a network drive?

[Chuanbo Wang]

Same here. Moved the installer file to C drive and then it worked.

[Lucas Fávero]

Are u a god? Thank you.

[Yue Liu]

thanks！It works！

[Tianyi Yan]

Amazing, it works!!!!

[henry xiong]

you are my angel.

[binglun liu]

Awesome

[Rojitha Goonesekere]

Does anyone know where this drive is on a Mac?

[Walter Roberson]

Which drive are you asking about, Rojitha Goonesekere ?

Try looking in ~/Downloads/MathWorks/R2019b/ perhaps? That is where the installer tosses the installation program and archives .

[Tong Li]

It is so useful!!! I change the download files location from 'download' to 'program files/matlab' and it installed successful!!!

[parisa rashidi]

This answered for me. It was so good . Thankful

Answer 3

[khalid Houhou]

I had this issue and it was not related to any network or connection. It was caused by a Malware I had in my PC called relevantknowledge. I uninstall it and it worked.

[Ahmad Almuhtady]

Thank you very much..that was exactly my problem..

[Vivek Chugh]

Wowser. This was my problem too! Thank you very much.

[Lucas Neves]

Hey! Thank you very much! It solved my problem!

[Jonathán Kovács]

Thank you very, very much! You just solved my problem!

[Amit Rai Chowdhury]

Wow!....this works. Thanks a ton.

[Libi Anandi]

This worked for me too! Thanks!

[Pragya Sharma]

This worked for me as well! Thank you!

[Narahari Gautam]

This worked for me.

[anubha agrawal]

Worked, thanks a lot Khalid

[jane steve]

thanks this is useful myadequat

Answer 4

[Brett Hansell]

1. Under System Variables, select New.
2. Set the first variable name "JAVA_TOOL_OPTIONS" with the value of "-Djava.net.preferIPv4Stack=true" (enter these without the quotation marks)
3. select New again.
4. Set the second variable name "JAVA_OPTIONS" with the value of "-Djava.net.preferIPv4Stack=true" (enter these without the quotation marks) and click on OK
5. Click OK again on the previous screen and try the installer again.

[DuongQuang male]

Thanks you, It works for me now.!!!

[Ching-Yu Jeng]

Thank you so much, It finally works!!

[Weixin Feng]

Thanks!!!!!

environment variable for some situation Try This!!!!

[Zoey Ge]

Thanks a lot!!!!!! Finally!!!!!

[Koh Jia Shun]

This works for me !! Thank you

[John Keel]

Thanks!!!! Worked well.

[Patel Reddy]

phew, that resolved the installation error! Thanks Brett

[Qiang Zhang]

it's sooo working!! thank you

[Ying]

Successful!!! Thank you!

Answer 5

[Brian Zarling]

I turned off my firewall and I still can't connect to Mathworks.

[Xing Lu]

So did I.

[Justin Ghetti]

Hi,

If you are still experiencing this issue, please contact MathWorks support:

http://www.mathworks.com/support/contact_us/

-Justin

[Shweta Saha]

All my proxy server are deselected and then also I am un able to install MATLAB. I am getting this error:

[John Geddes]

If you are still experiencing this issue, please create a service request below.

https://www.mathworks.com/support/contact_us.html

-Colin Fraser

[Shweta Saha]

Thank you.. I have created the service request...

[Daniel Torres]

I was getting installation errors left and right. I did an internet speed test and saw I was pulling only 10MB. I relocated my wireless dongle, retested, 150MB. Tried again - installed successfully.

Seems the installer is persnickity with your download speeds.

Answer 6

[Chris Håkansson]

I had the same problem and followed all instructions above about filling in proxy-server information and deactivating the firewall etc. but nothing worked. Turned out all I needed to do was uncheck the box which indicates to use a proxy server. It is as mentioned in other links found in Control Panel/Internet Options/Connections/Lan Settings.

[Hendrik Just]

Had the same problem. Now it works. Thanks a lot!

[Benyue Zhao]

I had the same problem. Now it works. Thanks a lot!

[robert downey]

Thanks buddy. i was facing same now its clear

[Tianyang Zhang]

Thanks!

Answer 7

[Caitlyn Hampel]

I had this problem as well, but I found that it was because my internet connection was too slow. So it only worked when I used a faster connection. Beware that the downloads during installation are rather large files, including the toolbox add-ons. Hope this information can be of help to others.

[Mark Hulley]

I had the same issue but it must have been my connection speed, because it worked on the third attempt without me actually changing anything.

[Thomas Lo]

I just ignored the error message by clicking OK. Then click NEXT again and it worked.

Answer 8

[Gregg Casey]

Had the same problem on my Mac and I have never had a problem like this on a Mac since I have used them. (Probably more than 8 years.) My laptop did not have the firewall turned on at all during all attempts. So this is probably just badly written software from Mathworks. What worked for me is to use my hotspot. That is all I changed - connect to my Karma hotspot and click "Next" again. Done. Note that I first did the same after connecting to my iPhone as a hotspot and that did not work. (Just clicked "next" and got the same error message.) However, that could have been that my phone was having a connection issue.

Mathworks- please look into this issue and fix it. The software should not require special proxy settings.

[jinxxx]

Me too, maybe you should try it for a couple more times. I only successfully installed it after 10 times, but I made it at last.

[Ben Zhao]

I can only use hotspot to install. Have tried every method that I can imagine.

[Kyle Perry]

Hello Ben,

If you are unable to activate successfully through your hotspot, you can try to activate MATLAB through the manual method. I have attached a link below that explins this process:

https://www.mathworks.com/matlabcentral/answers/259627

Answer 9

[Jon]

On a Mac (running 10.10 [Yosemite]) I still needed to temporarily disable the Firewall (under System Preferences > Security & Privacy) in order to complete activation.

[Wang Jia]

Solved my problem. Thanks,

Answer 10

[Donald Niman]

This is what I did to successfully install Matlab (Home Use) on my Windows 7 x64 SP1 system. Note that I do not know which one of the following things helped to make things work; I just did all of them. Also note that I am not using a proxy server, if you are, this will probably not help you.

1. Turned off internet router and then turned it back on.

2. Restarted the PC in Safe Mode.

3. If applicable to you: The installation file was on hard drive volume D:\ and I moved it to C:\

4. From control panel->administrative tools->Services, I right-clicked "Windows Firewall" and selected "Stop".

5. I ran the Matlab installation file from c:\.

6. When the installation screen came up, I did not click on the button at the top right of the dialog. Instead, I clicked the "next" button at the bottom. (Of course, I am not using a proxy server.)

7. A dialog appears to enter your login credentials: do that and the installation will continue.

8. The installation will eventually complete and then you can activate it by following the on-screen directions.

9. I restarted the system normally and verified that Matlab was working.

(Hopefully, I did not leave anything out.)

[NIDHI GUPTA]

thanks..it works

[Ishaa Kulkarni]

tysm...you rock!!!!!!!!!!

[Felipe Alandete]

Thank you!! The step 6 worked for me. I had pressed that buttom by mistake

[Yinghui Zhang]

Your steps really worked for me! Thanks!

Answer 11

[Zhaobo Zhang]

just try it again and again

[Bruce Yawn]

Same. Just took three or four attempts.

Answer 12

[Anna Smirnova]

Error : unable to connect to host. sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target

Windows 7 64-bit. What am I doing wrong?

Answer 13

[Matthias Finsterbusch]

I am trying to install Matlab 2018b on a Win10 64bit System, getting the following error:

"Error : unable to connect to host. sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target"

Any instructions how to handle this problem? Thanks in advance.

[Walter Roberson]

Material that looks relevant at https://confluence.atlassian.com/kb/unable-to-connect-to-ssl-services-due-to-pkix-path-building-failed-779355358.html

Answer 14

[Jan]

See also: https://www.mathworks.com/matlabcentral/answers/446396-cannot-install-matlab-on-my-windows-10-laptop#answer_365246

Create the two environment variables

• "JAVA_TOOL_OPTIONS" with the value "-Djava.net.preferIPv4Stack=true"
• "JAVA_OPTIONS" with the value "-Djava.net.preferIPv4Stack=true"

Run the installer. Afterwards the variables can be removed.

[Bart]

This did the trick for me. Thanks!

[XiaoQian Ye]

Also did the trick for me. Thanks. (After tried Firewall, antivirus, proxy all off). Mind giving a headup what the paramenters did? Thanks again!

[Ani Padma]

Thanks a lot Jan, I tried all other suggested solutions with no success...I was even considering upgrading my laptop to a new one thinking it might be a hardware issue.However, this environment variables solution worked for me...Phew!!

Answer 15

[Charles Dalley]

Right. I have restarted the process multiple times! I've checked all the suggested settings and turned off windows firewall, but every time I get to the 'select license' page having logged in, it stops me from proceeding even though it clearly is connected as it got the details in the first place!

and it blocks me from doing the license file thing, saying 'no products exist for this license' even though I activated it for 2014a

HELP, I HAVE COURSEWORK DUE

[Scott]

Hi Charles,

If you are still having trouble installing MATLAB, please contact MathWorks support:

http://www.mathworks.com/support/contact_us/

-Scott

MathWorks Installation & Licensing Support

Answer 16

[Furkaan Hossain]

Hi there, I am using a Window's 10 on my pc. Not a part of any organizations. As far as I can tell I am not using a proxy server and I tried installing MATLAB with my firewall turned off as an administrator. I am still encountering the connection error. Any help in the matter would be greatly appreciated. Thnks

[mætlæb]

I'm pretty sure that login.mathworks.com is down (at least I'm not able to ping it). And that's why you (and me too) get this connection error.

[Xuan Li]

As of 9/9/2017 login.mathworks.com seems to be still down. Having the same installation issue.

[Alexey Kalinichenko]

Is there a fix? Today, Sep-11-2017, and server login.mathworks.com is still not responding!

[Cameron Johnson]

Experiencing this problem as well after troubleshooting on Sept. 11, 2017 from 2:00pm to present (3:43PM)

[Tynan Mather]

Oh, that would explain a lot.

[Alexander Casalis de Pury]

Is it still down? My error just reads 'The application could not connect to MathWorks' and nothing about firewalls or proxys

Answer 17

[Yehya Jebbaoui]

Turn off the Wifi of the institution you are in, then turn on Mobile hotspot on your phone to share the mobile connection (if you have 3G or 4G). You will pass the first steps and it will start downloading. When it starts downloading, switch to the wifi. It worked for me.

[Dong Li]

god you are the saver

[Nagwa megahed]

thank you , it really becomes the suitable solution for me everytime i install matlab

Answer 18

[Dewi Mar'a]

I am dealing with the same problem. After almost a week I tried to install matlab more than hundred times, then I got no solution at all. My windows firewall was off, no proxy setting, no anti virus installed, even no matlab installed yet.

I am getting deperate with this problem because my deadline project comes closer, and I wasted the time too much to deal with this problem.

finally I end up with the last solution left, I tried to uninstall my windows, and try to install matlab again. BAAAAMMM....it works. do anything to get out of this stuck step. if it ends with great result, why not ? haha

[lin hv]

I feel so sorry about that. I am still through this annoying problem, yet I have to spend my time on those matter more.

Answer 19

[Handing Sun]

I am trying to install the 2019a on a win10 machine. I did the proxy setting, dont't have a antivirus softward, and the firwall doesn't seems to be a problem. But the connection error still exist.

[William Brown]

Same issue

[Colin Fraser]

Hi,

If you are still experiencing this issue, please contact MathWorks support:

http://www.mathworks.com/support/contact_us/

-Colin

[ying han]

same issue! i tried to install it more than hundred times

Answer 20

[Wu Ke]

Why have you anything else

[Jan]

This message is not clear.

[Colin Fraser]

Hi Wu Ke,

If you need assistance, Installation and Licensing Support can be reached at [phone]. Dial option 3, then 1 at the menu.

You can also create a request online. https://www.mathworks.com/support/contact_us.html

Colin

Answer 21

[Luke]

Internet security software designed to block certain IP ranges such as PeerBlock have MathWorks black listed in the default block-list.

Just set the blocked IP to "allow permanently" to let the installer connect and download your license details, software and associated toolboxes.

[Walter Roberson]

Mathworks delivers some of its content using one of the major cloud providers. It might be the case that the cloud provider is what is blacklisted rather than Mathworks itself.

Answer 22

[Greg Laurie]

I've also tried all of these tips, but activation via my account here doesn't work. So I tried using the File Installation Key process, but I always get the following error message: "Using a File Installation Key requires you run the installer from a MATLAB DVD or from a directory which contains files previously downloaded via the installer. To obtain the missing files, click Back on the previous screen and select Log in with a MathWorks Account or contact your MATLAB license administrator." I did get the licence code file and all. Any ideas? I need the software for a Coursera MOOC about Computational Neuroscience. Thanks in advance!

[Scott]

Hi Greg,

If you are still having trouble installing MATLAB, please contact MathWorks support:

http://www.mathworks.com/support/contact_us/

-Scott

MathWorks Installation & Licensing Support

Answer 23

[Bradley Alderton]

Charles, i'm in the same position as you. I have coursework due tomorrow and this is quite a headache!

[Scott]

Hi Bradley,

If you are still having trouble installing MATLAB, please contact MathWorks support:

http://www.mathworks.com/support/contact_us/

-Scott

MathWorks Installation & Licensing Support

Answer 24

[Carsten Jorgensen]

I just came across this same error. At first, I assumed it was because I was installing on a Windows XP system. When I discovered that Win XP was still supported for 2015a, I decided to troubleshoot further.

My resolution: The system could not communicate with the MatLab servers because the Date/Time on the system was inaccurate. - Setting the systems Date/Time correctly resolved the issue.

Answer 25

[Andreas]

The setup program was trying to go to the IP address of the mathworks site instead of DNS name. Had to add https://144.212.244.21 and https://144.212.244.16 to the firewall.

It is unclear to me why MathWorks would use fixed IP addresses instead of DNS. Please fix this issue.

[Scott]

Andreas,

The installer does reach out to the MathWorks servers using DNS, not IP address. The IP addresses for those servers are static, yes, but that's not what the installer uses to reach them.

If the MATLAB installer is consistently resolving the wrong IP address for MathWorks service and activation servers on your machine, please contact MathWorks support so we can troubleshoot this issue.

http://www.mathworks.com/support/contact_us/

Thanks,

-Scott

MathWorks Installation & Licensing Support

Answer 26

[Tony Langley]

I recently faced the same issue on my Mac. It wasn't because I was using a network proxy (per se) or that the I had OSX's firewall turned on.

Eventually I worked out that it was because of Kaspersky Internet Security. So I temporarily disabled that which then allowed the installer to work.

[Günther Wal]

I had the same prob on my mac. I discovered that I have to open it in the same network as I installed the software. Support didn´t provide any help. For me it´s over and out, I stick with Mathematica...

[Walter Roberson]

Mathematica uses exactly the same license manager (but possibly a different revision at present.)

[aMusings]

Having this issue on a Mac with El Capitan. Confirmed with Network Utility that we could reach both ports 80 and 443 at both urls listed above. Firewalls were turned off on both individual machine and router. Suggestions?

Answer 27

[Manoella Sánchez]

I have a problem with the process. I need log in with MathWorks account. The messenge is " The application could not connect to MathWorks. For more information on resolving this issue, see this Support Article" Please help me.

[Saurabh Sharma]

I am facing the same problem and no reply for MathWorks support team.

Answer 28

[Birds Mafereka]

The following error was detected while downloading 3p/icu_win64_1438296709.enc: null Would you like to retry downloading 3p/icu_win64_1438296709.enc? If you press No, the installer will exit without completing the installation. Hepl please I got this error and it keeps on poping when trying to download?????

[Scott]

Hi Birds,

This type of error usually indicates that security software or antivirus software installed on your machine is interfering with the MATLAB installer. To resolve this issue, add the MATLAB installer to your security software's whitelist, or disable your security software for the duration of the installation.

Thanks,

-Scott

MathWorks Installation & Licensing Support

Answer 29

[Yu Xiong]

I have got the same issue here and no idea what I should fill in on Server and Port.

[Steven Lord]

Please contact Technical Support using the Contact Us link in the upper-right corner of this page for assistance.

[Yu Xiong]

thanks! I have submitted my ticket.

Answer 30

[Michael Rook]

I am attempting to install MatLab for the QUT Robotics course. I have downloaded the files but I cant install anything. It says it cant connect to Mathworks. In the Connection Settings box it is asking for information I dont know. It says I can leave it blank, but does not work that way either. I can't submit a Ticket as I have no License Number. I am on a home computer with a wireless modem. I have a Mathworks account. How do I install this program as nothing seems to work and I need to start this course now?

Answer 31

[SEI U]

プロキシサーバー認証の画面にユーザーとパスワードを入れて下記のエラーメッセージがありました。 「アプリケーションは MathWorks に接続できませんでした」

[Walter Roberson]

Approximate translation:

I entered the user and password on the proxy server authentication screen and the following error message was found. "The application could not connect to MathWorks"