Acrobat reader becomes unresponsive when opening a protected file.

Hi there

I have an issue where by users are experiencing Adobe becoming non-responsive when opening a protected a file. 

All other files work fine and initially protected files open fine as well. However when testing the issue i found that some protected files open the Acrobat window first and then pop-up for the password appears however with a specific file it opens the pop-up immediately, when selecting cancel the application then becomes non-responsive and has to be force closed from the task manager window. 

I have already uninstalled and reinstalled Acrobat, i disabled the protected mode and disabled the enhanced security for testing purposes. This is affecting multiple users at the moment and accessing protected pdf files is a core function of the clients business. 

I have also tested several "Fixes" from previous threads on here which have not resolved the issue. All functionality was working last week without any issues.

The users are all on Windows 11 24h2 with the latest updates installed on the devices.