Another user (<user>) has placed this database under source code control and is the only person who should work with it.

This message has the following cause and solution:

• You are trying to open a database owned by another user.

You were not the last user to use this file. If you continue, you will overwrite their changes and check out status. Log out from VSS, and then get your own copy of the file using the Create <object> From SourceSafe command.