Having this error message when you login your Windows session :
An error occurred while reconnecting X: to
Microsoft Windows Network: Multiple connections to a server
or shared resource by the same user, are not allowed. Disconnect all previous
connections to the server or shared resource and try again.
This connection has not been restored.
If your computer is member of an Active Directory domain, this error may happen if you have a mapped drive that was attempted to be authenticated without success (marked with a red X) with a local account and a Groupe Policy Object (GPO) attempt to map the same resource on your computer.
If such conditions are met, try to manually unmap/disconnect the drive manually, logoff and login your session again.