User on Windows 10 cannot encrypt files

I have an end user who is able to open received PGP encrypted files, but when creating files, a 'the file was corrupted' message populates no matter where the file is opened.

The user is able to receive messages from other users and decrypt them successfully, but can't open files they encrypt on their own machine even when trying to open locally.

Multiple clean installs of the PGP software have not resolved the issue, nor have the functions available under the 'tools' tab.

Please advise if you've run into something similar and how you resolved it.

Thank you!