Why could matlab not find the appcontainer folder?

After starting up Matlab I get the following errors in the command window:

Warning: Name is nonexistent or not a directory: C:\Program Files\MATLAB\R2022b\toolbox\matlab\appcontainer\appcontainer

Warning: Name is nonexistent or not a directory: C:\Program Files\MATLAB\R2022b\toolbox\matlab\parquetds

Warning: Name is nonexistent or not a directory: C:\Program Files\MATLAB\R2022b\toolbox\matlab\parquetio

Warning: Name is nonexistent or not a directory: C:\Program Files\MATLAB\R2022b\ui\mw-webwindow\mw-webwindow-m

Warning: Can't find the resource file 'toolbox/matlab/graphics/hg/hgrc.m' needed by 'C:\Program Files\MATLAB\R2022b\bin\win64\hg.dll'

> In initprefs (line 11)

Warning: Can't find the resource file 'toolbox/matlab/graphics/hg/hgrc.m' needed by 'C:\Program Files\MATLAB\R2022b\bin\win64\hg.dll'

> In initprefs (line 11)

Warning: Can't find the resource file 'toolbox/matlab/graphics/hg/hgrc.m' needed by 'C:\Program Files\MATLAB\R2022b\bin\win64\hg.dll'

> In initprefs (line 11)

Warning: Can't find the resource file 'toolbox/matlab/graphics/hg/hgrc.m' needed by 'C:\Program Files\MATLAB\R2022b\bin\win64\hg.dll'

> In initprefs (line 11)

Warning: Can't find the resource file 'toolbox/matlab/graphics/hg/hgrc.m' needed by 'C:\Program Files\MATLAB\R2022b\bin\win64\hg.dll'

> In initprefs (line 11)

Unrecognized function or variable 'rmfield'.

Answer 1

[Jan]

Unrecognized function or variable 'rmfield'.

It seems like the complete Matlab path is destroyed. Please explain, what has happened before. Is this a fresh installation? Did you edit the pathdef.m file? Did you shaddow this file by a personal version, which does not include the toolbox folders?

See: https://www.mathworks.com/help/matlab/ref/restoredefaultpath.html

This command should fix a damaged path.