Microsoft Windows Network: Multiple connections to a server or shared resource by the same...

I have a small home network. After Microsoft forced a Windows 10 upgrade from Windows 8.1 my Windows 10 PC "Public" folder is not accessible across my home network. When trying to log in to the Windows 10 PC from my Windows 7 PC, I am getting this error message:


An error occurred while connecting to N:

Microsoft Windows Network: Multiple connections to a server or shared resource by the same user, using more than one user name are not allowed. Disconnect all previous connections to the...

Microsoft Windows Network: Multiple connections to a server or shared resource by the same...