TeamFoundationService

Credential Manager is the place to be

To change the user which logs into TeamFoundationService you have to go to Control Panel->User Account and choose Manage your credentials.
There you can delete or change your credentials. If you delete the entry you will be asked to log in the next time you start VisualStudio.

Change User to log into Microsoft TeamFoundationService in Visual Studio

Somertimes it is necessary to change the user to log into the TeamFoundationService in Visual Studio. Windows/Visual Studio caches these user credentials to log you in when opening Visual Studio. It is not possible within Visual Studio to change the use.
Subscribe to TeamFoundationService