What causes an "Unable to load DLL dependency: KERNEL32.d​ll.GetFile​SizeEx" error on the target screen when attempting to load an SLRT application in R2018b or prior?

NOTE: This article is not relevant for newer Simulink Real-Time versions (R2019a or later).

When building a Simulink model for Simulink Real-Time (SLRT) with the latest version of Microsoft Visual Studio C++ 2017, the following error is shown on the target screen (or obtained using the command "tg.viewTargetScreen") when attempting to load the application.

ERROR: Unable to load DLL dependency: KERNEL32.dll.GetFileSizeEx
Loading C:\​private\​xpcosc.dlm failed with error 127
Error: Could not load model C:\​private\​xpcosc: 127

When running the command "slrttest" the error might appear as:

>> slrttest
### Simulink Real-Time Test Suite ### Host-Target interface is: TcpIp
### Test 1, Ping target computer 'TargetPC1' using system ping: ... OK
### Test 2, Ping target computer 'TargetPC1' using SLRTPINGTARGET: ... OK
### Test 3, Software reboot the target computer 'TargetPC1': ...... OK
### Test 4, Build and download a Simulink Real-Time application using model slrttestmdl to target computer 'TargetPC1': ...Warning: Error occurred while executing the listener callback for event Loaded defined for class
MathWorks.xPCTarget.FrameWork.xPCTargetPC:
Error using SimulinkRealTime.target/XCPLoadedCB
Enter a valid application name
> In SimulinkRealTime.target/loa
  In slrttest (line 212) OK
### Test 5, Check host-target command communications with 'TargetPC1': ... FAILED

When building a model for SLRT, you may see the following warnings and errors:

### Download model onto target: TargetPC1Warning: Error occurred while executing the listener callback for event Loaded defined for class
MathWorks.xPCTarget.FrameWork.xPCTargetPC:
Error using SimulinkRealTime.target/XCPLoadedCB
Enter a valid application name 
### Create SimulinkRealTime.target object tgError using coder.internal.callMakeHook
The call to slrt_make_rtw_hook, during the exit hook generated the following error:
    Invalid Simulink object name: loader

The build process will terminate as a result.<...>
Caused by:
    Error using dispIfVerbose (line 31)
    Invalid Simulink object name: loader
        Error using dispIfVerbose (line 31)
        No block diagram 'loader' is loaded.

Additionally, the following warning may appear in Diagnostic Viewer:

Warning: Streaming to SDI is not available: Could not connect to XCP slave: XCP Master internal error: Connect failed

Answer 1

[MathWorks Support Team]

Please refer to the following bug report for fixes and workarounds:

https://www.mathworks.com/support/bugreports/details/1890172

[Stefanie Schwarz]

If the above does not help, please contact MathWorks Technical Support for further assistance: https://www.mathworks.com/support/contact_us.html