Doc command/Help button don't work while "Current Folder" is in a mapped network drive

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Matthew McMahon
Matthew McMahon 2025-5-14
评论： Matthew McMahon 2025-7-7
When my Current Folder (working directory) is in a mapped network drive (regardless of whether I've added the current folder to the MATLAB path), neither the "doc " command nor the Help button (in the Ribbon) work. Nothing happens at all. I discovered that the command
web("https:\\www.mathworks.com")
produces the following warning in that case:
Warning: MATLAB was unable to launch your System web browser:
The current directory is invalid.
> In web>displayWarningMessage (line 172)
In web (line 114)
Out of curiosity I changed my current folder to one on my local C: drive; when I did that, both the "web" command and the "doc" commands successfully opened the system Web browser (as they should).
Why would my current folder location make a difference? Is there anything I can do to fix it? Is this a bug?
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Matthew McMahon
Matthew McMahon 2025-7-7
Sorry - I see I left this thread unresolved. To wrap this up, I did reach out to MathWorks support and in going back and forth with them I discovered the underlying problem. For some reason, mapping the "Z" drive in Windows Explorer did not successfully map the drive in a way that was visible from the Windows Command Prompt. The workaround is to map the drives explicitly from the Command Prompt using the "net use" command. I set up a batch file to run at Windows login (using the Windows task scheduler utility) that does this mapping explicitly. Now MATLAB opens the help documentation no matter what folder I am working in.

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