TF401066: You are about to upgrade TFS on a machine that contains an underscore in its name. Running TFS on a machine with ...

TF401066: You are about to upgrade TFS on a machine that contains an underscore in its name.  Running TFS on a machine with underscores in its name will prevent you from connecting to TFS Web Access using Internet Explorer.  Some administrative functions such as team project security, group membership, and work item areas and iterations will also be unavailable.  To avoid these issues, follow the instructions at the following site to rename your machine before proceeding: http://go.microsoft.com/fwlink/?LinkID=285887clcid=0x409