
(2) Restore all the databases to TFS2010’s instance of SQL Server
(3) Run following command in cmd as administrator
C:\Program Files\Microsoft Team Foundation Server 2010\Tools>TFSConfig RemapDBs
/DatabaseName:Testsvr;Tfs_configuration /SQLInstances:testsvr /continue
(Continue is really important, if fails first time then run it again)

(3) Install Team Foundation Server 2010
(4) After the install has completed the Team Foundation Server Configuration Wizard will open
Select Upgrade | Start Wizard

(If you run Basic/Standard/Advance option other than Upgrade, you will get following error)

(5) Now you can go to "team foundation administration console"
You will see all your team collections
(6) Finally connects to the Team Server through Team Explorer
:) :) :) :)





