Outlook 2003 PST File Won't Compact


Outlook version
Email Account
I follow instructions to compact my 14 gig PST file but it won't compact. After clicking it runs for about 10 seconds. No error message.

I have 200 gigs of disk space so that isn't a problem.

Any suggestions?

Diane Poremsky

Senior Member
Outlook version
Outlook 2016 32 bit
Email Account
Office 365 Exchange
does outlook open with it in the profile? if so, open outlook and set the computer to not go to sleep then walk away for a few hours. it can take a long time to compact a huge pst and this worked for another user with a 50 GB! pst. it slowly compacted over a period of several days.