My thought was to: 
Restart with startup items turned off. 
Upgrade to Office 2013 
See if Outlook will open the PST 
Run SCANPST again 

Does SCANPST compact the PST ? 
Should I compact after running SCANPST ? 

If I get Outlook Running, should I move old messages to separate PST files, a year at a time? 

Any 3rd party repair tools that I can use? 


Thanks.

• Moved by Fei XueMicrosoft contingent staff Monday, May 18, 2015 2:28 AM

Hello Matt,

See How to manage .pst files in Microsoft Outlook . You may consider archiving old pst files in Outlook.

The forum is for developers. I'd suggest asking non-programming questions on the Outlook IT Pro Discussions forum instead. 

• Edited by Eugene Astafiev Sunday, May 17, 2015 12:35 PM

Hi,

I found a similar thread, maybe from your coworker? Please refer to this link below:

https://social.technet.microsoft.com/Forums/office/en-US/cdd29c72-d3bd-4244-b793-35ad49be3853/how-to-repair-large-outlook-2007-pst-on-windows-7?forum=outlook

Read Kelvin Howard's reply and you will find it helpful.

Regards,

Melon Chen
TechNet Community Su