Remove orphan identities in TFS 2010

Question

I am in the process of moving a TFS 2010 installation from one machine to another.

I found that is possible remap identities using TFSConfig Identities /change

Answer 1

Unfortunately, as is typical with many Microsoft products, the application is lacking many useful features (like a function to delete identities). You can do what I did and manually remove entries from the TFS_Configuration database in the table tbl_security_identity_cache and it will clean them up.

You will have to temporarily disable the foreign key constraints on the table or else you can't delete from it.

I used a statement like:

DELETE FROM tbl_security_identity_cache
WHERE 'display_name' IN
(
    'useless crummy identity 1',
    'useless messy identity 2'
)

and so on

When I searched for how to do this nobody had posted it so here you go.