Sue Mosher, Microsoft Outlook MVP, provides a registry key that you can use to disable the use of .PST files. Create or modify the following DWORD registry value:
HKEY_LOCAL_MACHINE\Software\Microsoft\Office\11.0\Outlook\DisablePST. Set the value to 1 to disable .PST files, or 0 (default) to enable them.
Note that .PST files that are already in a user's email profile will still be able to function. Therefore, you should manually remove all .PST files from the profile prior to setting this value. This also includes disabling the auto-archiving feature, which takes advantage of .PST files.
Sue's article can be found here.
Your advice on how to disable .PST files in Microsoft Outlook 2003 prevents new .PST files from being created with the "File -> New -> Outlook Data File" method, but I believe you can still create them with the "Tools -> Email Accounts -> New Outlook Data File" method. Is there a way to turn this off, as well?"
One possible solution is to install the Outlook group policy template, and then configure the option to disable end-user access to "Tools > Email Accounts." See the screenshot below for a sample.
Brad Dinerman, Clients and Mobility expert
Do you have comments on this Ask the Expert Q&A? Let us know.
Related information from SearchExchange.com:
Dig Deeper on .PST Files
Related Q&A from Bradley Dinerman
Find out how you can avoid DNS issues related to a Exchange 2003 server only collecting email from specific POP3 domains.continue reading
Are you having trouble with duplicate appointments in your Microsoft Outlook 2003 calendar? Learn what may cause this to happen.continue reading
Learn the best way to configure the default recipient policy in an Exchange 2003 test environment.continue reading
Have a question for an expert?
Please add a title for your question
Get answers from a TechTarget expert on whatever's puzzling you.