Close Outlook. That will release the file lock.
Storing PST files on a network is not supported and if network connectivity
is lost while the file is opened that's a real good way to corrupt the PST
file and leave it in a locked state.

Signature
Ken Slovak
[MVP - Outlook]
http://www.slovaktech.com
Author: Absolute Beginner's Guide to Microsoft Office Outlook 2003
Reminder Manager, Extended Reminders, Attachment Options
http://www.slovaktech.com/products.htm
> Outlook 2003 will not return a .pst file to the network after it's been
> closed so that a different application can open it. Is there a way to use
[quoted text clipped - 4 lines]
> could use when I need to backup a .pst file? I don't know what could be
> catching so that the file won't be flagged as in-use by outlook 2003.
David Harris - 24 Jun 2005 15:32 GMT
Sorry. I tried closing outlook and that does not release the file. I guess
server 2000 doesn't view freed access rights if an XP computer has released
them.
Server 2000 has an overall file access dialog and the pst is on the server
2000 computer so hopefully I can just use that when I need to.
David
> Close Outlook. That will release the file lock.
>
[quoted text clipped - 10 lines]
> > could use when I need to backup a .pst file? I don't know what could be
> > catching so that the file won't be flagged as in-use by outlook 2003.