I'm having the same issue with all my users.

I saw a post where they were asking for customers to bata test the fix.   

This is it here: Sage 50 2021.1 Controlled Release

Thank you for the update.

Good News! I just got off a call with Sage and now have the 2021.1 controlled release installed on my PC. My mouse is working normally again! If all goes well with the controlled release it should be available soon.

Sage Fixed it!  Here is a link to our blog with an overview of the updates and a video! 

blog.bestbusinessstrategies.net/.../

Did the release get out to the community?

Last I heard it was schedule to release Sept 30th.

Thank you everyone for the fix and posting the information. I feel like buying cake for the office to celebrate the news! I just need to make sure I get enough for everyone.

I have checked for updates and I have none.  It's mid-October and my mouse is still freezing the entire computer.