File <File> is already open.

This warning has the following cause and solution:

• Either another user or VSS has the file locked.

  If VSS has the file locked, you can attempt to release the lock by performing a status check of the file or the entire database.

  At a Command Prompt, type the following:

  SS Status $/ -R

  If the file remains locked, contact your network administrator.

  If problems like this continue, you may need to enable VSS locking.