Unable to perform the harness operation for the externally saved test harness since the directory is not writable

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Flavio Luiz Puhl Jr
评论： Flavio Luiz Puhl Jr 2025-1-10
When trying to externally creating a test haness, simulink is returning this error:
Error:Unable to perform the harness operation for the externally saved test harness 'untitled_Harness1' since the directory is not writable.
[1] This issue happens with any matlab version.
[2] Running Matlab as admin does not solve the issue.
[3] Even after the file beeen synchronized with OneDrive, the issue persists.
[4] I have windows R/W permissions to the folder

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Madheswaran
Madheswaran 2025-1-10
Hi Flavio,
I have came across similar error once. I checked the permissions with 'fileattrib' command, and noticed that value for 'UserWrite' was 0 eventhough I had Windows read & write access to the directory. I flipped the 'UserWrite' value to 1, later it worked fine for me.
You can modify the permissions using the below command:
fileattrib(<your directory address>, '+w');
For more information, refer to the following documentation: https://mathworks.com/help/matlab/ref/fileattrib.html
I hope this would solve the issue you are facing!
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Flavio Luiz Puhl Jr
Flavio Luiz Puhl Jr 2025-1-10
Hi Madheswaran,
Thanks a lot for your answer. Now it is working and I can externally create the test harness.
PS: in order to fileattrib work, the path shall not have spaces (maybe other characteres are also not allowed, but I didn't test)
Thanks again.
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