My System Administrator renamed my computer. So where it was \"MyLaptop2\" it is now just \"MyLaptop\".
So now all my source control bindings and checked out files
To expand on some earlier answers, my collection name had some spaces in there. Even if the collection name is surrounded in quotes ("http://1.2.3.4:8080/tfs/My Collection Name"
) you need to replace any space characters with %20
to resolve the name properly (tf workspaces /updateComputerName:MyOldComputerName /s:"http://1.2.3.4:8080/tfs/My%20Collection%20Name"
)