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How to Repair Large Outlook 2007 PST on Windows 7

Posted on 2015-01-07
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Last Modified: 2015-01-15
User running Windows 7, with Outlook 2007, 20 GB PST.
User has two email account, 1 may be an IMAP, 1 may be POP, or both can be POP  (I'll check if necessary)
No Exchange accounts.

Outlook wouldn't start, so I used SCANPST to repair (took hours, of course).  Outlook ran slowly, but now is getting stuck again.

Ran Windows 7 Error-checking, with "Scan For and attempt recovery of bad sectors".

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.
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Question by:computerlarry
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LVL 93

Assisted Solution

by:John Hurst
John Hurst earned 400 total points
ID: 40536038
You can try Stellar Tools, although SCANPST has always worked for me.

http://www.stellarinfo.com/exchange-ost-recovery.htm

Ran Windows 7 Error-checking, with "Scan For and attempt recovery of bad sectors".

This means the file was physically damaged.

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

I use Archiving. I have email back to 1996 and only a 1 GB main PST file. You can move emails to separate PST files, but Archiving does this automatically.
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Author Comment

by:computerlarry
ID: 40536332
Would upgrading Outlook from 2007 to 2013  help significantly?
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LVL 93

Accepted Solution

by:
John Hurst earned 400 total points
ID: 40536427
The maximum size of an Outlook 2007 file is 20Gb; the maximum size of an Outlook 2013 file is 50Gb. So the newer version can handle more email.

http://support.microsoft.com/kb/982577

However, very large PST files tend to slow down Outlook and Archiving is one excellent way to prevent issues.
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LVL 3

Assisted Solution

by:alanccw
alanccw earned 100 total points
ID: 40536954
Don't let your PST file size larger than 10GB, otherwise its performance will be affected greatly. See http://www.datanumen.com/articles/prevent-pst-corruption.htm for tips on how to prevent PST file corruption.
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Author Comment

by:computerlarry
ID: 40538544
I used SCANPST to repair the PST. When I started Outlook, it is still running very slow.
Before I archive, would compacting the PST help speed up the archiving?
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LVL 93

Expert Comment

by:John Hurst
ID: 40538751
Yes, I think it might. Be sure to make a backup copy of the PST file first.
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LVL 93

Expert Comment

by:John Hurst
ID: 40550900
@computerlarry  - Thanks and I was happy to help.
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