Access Denied

[REDACTED]

I'm having an issue with the new version (17.5.2302).  Some programs are crashing or generating errors when they try to autosave work.  I can save and load files manually, but whenever an autosave occurs, the program crashes, and the error logs show access to the autosave file was denied. 

Eventually I did a system restore to a save point that was made about eight hours before I noticed the problem.  The only change that occurred in that time was the Avast upgrade to version 17.5.2302.  Once the restore was complete, I no longer encountered permission errors; however, Avast was no longer loading.  The UI reported an error and could not restart (version 17.4.2294).  If I repair Avast, the program will load, but it is on version 17.5.2302, and then I get permission errors.

I'm running Windows 7, with all patches are up to date.

[Eddy]

What shield is causing the problem ?

[REDACTED]

It is the ransomware shield.  If I disable it, the issue goes away.  I'm guessing it is only affecting autosaves because the program has to delete a previous autosave before making the new save, and Avast is preventing the file from being deleted.