I have tried the steps and am still having issues. It seems the left click does not stay engaged during a move. Trying to highlight rows in excel or moving windows between screens, it just drops as though the button was released. This is not a driver or setting issue. I know this because I have two Surface Pro machines and two identical Arc Mice. The problem follows the new defective mouse. The link you sent me to contact support returns:
You don't have permission to access "http://support.microsoft.com/en-us/home/contact?" on this server.
Reference #18.c400de17.1715786317.55cc2161
https://errors.edgesuite.net/18.c400de17.1715786317.55cc2161
Trying to use the chat function or any other way I have found to contact support always starts with the drivers, settings, etc., which I know is not the problem. I have put in fresh batteries and am still getting the same issue. Support also starts with questions about my Surface Pro, which is out of warranty and the support path seems to end there. Can a person somehow return a new mouse with an obvious hardware issue to Microsoft for an exchange? I really wish I had bought this from Amazon so I could get some support.