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Outlook 2007 OST File Size

Posted on 2011-09-21
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Last Modified: 2012-05-12
Dear All,
 
I am having a problem with my utlook ost file. The actuall size of the.ost is about 200MB but it shows 19GB. Default size that we have set for exchange is 300MB for ost. So my emails have stopped coming and going as well. Is it a virus problem ?

Kindly Help
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Question by:upl1
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Expert Comment

by:Marc Dekeyser
ID: 36572390
If you want to know if it is a virus issue you best run a AV scan... Are you using outlook in conjuntion with exchange? Can you move the OST file to another location when outlook is closed and see if the OST that gets created has the same issue?
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Author Comment

by:upl1
ID: 36572397
i did that .. moved the ost to another location and reconfigured the mailbox with new ost .. issue is still the same.. run the antivirus but no viruses were detected.
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Expert Comment

by:haoss
ID: 36572400
You need to compact the ost file.
http://support.microsoft.com/kb/289987
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Author Comment

by:upl1
ID: 36572414
compacting is done when the file size is big. When i export the same ost to another location it shows the correct size . but inside user profile it shows 19GB ost
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Expert Comment

by:haoss
ID: 36572863
maybe there is a problem with cached mode.
have you run scanost.exe??
http://office.microsoft.com/en-us/outlook-help/about-the-ost-integrity-check-tool-HP003089624.aspx
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Expert Comment

by:haoss
ID: 36572883
you can limit max ost file size:
http://support.microsoft.com/kb/832925/
also have you checked synch error messages.
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Expert Comment

by:jennylembert
ID: 36597959
Hi upl1,

Check log file. Is any error is appearing there? If there is any, please mention it.
In the mean time, backup your OST file and try scanost.exe utility to resolve your issue. To locate scanost.exe utility for the version of Outlook you are using refer: http://www.techtwitt.com/how-to-resolve-ost-integrity-issue-using-scanost-exe/
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ID: 36975515
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