Let me know if this has helped resolve the issue you are facing or if you need any further assistance.
(This message was posted on behalf of Intel Corporation)
It was working well for about two weeks, but now it is showing the error again. Is there a reason why it keeps corrupting the execution file and is there anything I can do to prevent it from happening? Reinstalling every week is not very practical.
Is it corrupted? Can you start it from a command line? TBH, it doesn't sound like a Quartus issue. It looks like a permission issue, or some kind IT override thing, which is messing with the permission/file.