Error reading file \\.......\appshare\libs\formfile.vcx

I agree that a Read Error of a file inside the exe is bad news!

Is there a virus scanner involved? Those can grab access while allowing running apps to believe they still have access, which is consistent with this sort of error.

Alternatively, where is the exe located? If it's on a mapped drive, some versions of Windows 10 were known to "poll" mapped drives, with intermittent disconnection potentially affecting anything with files on that drive, including MS Word etc if the .doc is on the mapped drive. However, you'd expect a generic file access error rather than an internal VFP access error.

FWIW, temporary access failure in Windows is recognized as an issue in VFPA so that many file functions now automatically repeat the command a user-defined number of times before raising an error. Usually the function succeeds a split second later on try 2 or 3. Perhaps this is another symptom of the same issue- though again you'd expect a generic file access error.