Description:
I recently downloaded an upgrade to 7.6.4.1 (x86_64) https://git.libreoffice.org/core/+/e19e193f88cd6c0525a17fb7a176ed8e6a3e2aa1
When I tried to open a password protected file it gave me warning that the file could not be opened even after I entered the correct password. At the same time, Windows reported "controlled folder access blocked soffice.bin from making changes.
I could open the file in read only mode.  I could edit a copy of the file, but could not save it.  Upon trying several save attempts I always got a "file not found" message. I have used the protected file through several upgrades and never had a problem before. If I move the file to version 7.5.0.3 and enter the correct password, it opens correctly. Any help would be appreciated. 

Steps to Reproduce:
1.Open a password protected file
2.
3.

Actual Results:
Get a message it cannot be opened

Expected Results:
opened in read only
tried to edit a copy...could edit but could not save the copy. When trying to save as or save I always got a "file not found" no matter what I named it.


Reproducible: Always


User Profile Reset: No

Additional Info:
I have never before ever gotten the dialog box advising that the file file could not be opened.  The same file works on my laptop running version 7.5.0.3

The ABOUT page won't copy.

I had the same problem in Safe Mode