Just this afternoon, Avast updated itself. I can no longer open Excel files without disabling the Ransomware shield.
My problem sounds very similar to this, but that supposedly was fixed.
https://forum.avast.com/index.php?topic=200854.0;prev_next=prev#new
My situation. Excel 2010 starter on Windows 7 64 Pro with Avast Internet Security - through 2020 paid license.
Any local file is opened in Read only mode and locked out. If I disable Ransomware shield all is good and things work normal. It worked fine this morning but the most recent update seems to have broken it.
For now I have removed Excel from the blocked apps list. Is this the correct action? It seems that Avast keeps trying to put it back on blocked even after I removed it.