Sage 500 Connection Issues

Hello,

I have a couple users receiving pop-ups when using Sage. While using Sage, they will get the following error:

Actively Refused

When re-launching the application, they encounter the following pop-up:

.Net Remoting error

They are using Windows 10 64 bit, 8 GB Ram, 3.2 Ghz i5 processors. Dell Optiplex 3020's.

I tried uninstalling and reinstalling Sage 500 using Revo Uninstaller.

I don't know much else about Sage, but these are the only two computers with this issue out of many.

Thanks for the help!