I have mouse without borders, and have been using it for years on 2 PCs. I am using Windows 10. I got a 3rd device, and connected it to my other 2 devices, and everything worked fine for a few days, and then it stopped working. I have spent HOURS with microsoft personnel, and no one has been able to resolve the problem. One of the error messages is about IP addresses, but one of the microsoft tech people tried resolving that issue, but unsuccessfully.