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You move this user mailbox to another DB and then removed OST and let it recreate again. Let me know the result.
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Hi,<br />
<br />
Have you checked the local size of the folder (No the server size)<br />
<br />
To check the local size,<br />
1. Click &quot;File&quot;<br />
2. Select &quot;Mailbox Cleanup&quot;<br />
3. Click View Mailbox size<br />
4. Go through each item and check the Sync Issues, Synch Issues\Conflicts and Since Issues\Local Failures<br />
This might help youto see where the extra stuff is coming from.<br />
<br />
Hope this helps.<br />
<br />
regards<br />
<br />
Emmanuel
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Ohmit

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Thanks and I trust all is well now
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I have a domain with an Exchange 2013 server. All pcs running Windows 7 and Office 2013. For some Strange reason one of the users off Line storage file OST has start growing. Even If the mailbox is only 6 GB the Ost file is now beyond 100 Gigs!!!! (I have expanded the limit because outlook stalled by 50 gig ost. <br />
I have tried setting up a new profile but the ost files just growing from scratch. <br />
Anyone has any ideas?
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I have a domain with an Exchange 2013 server. All pcs running Windows 7 and Office 2013. For some Strange reason one of the users off Line storage file OST has start growing. Even If the mailbox is only 6 GB the Ost file is now beyond 100 Gigs!!!! (I have expanded the limit because outlook stalled by 50 gig ost. 
I have tried setting up a new profile but the ost files just growing from scratch. 
Anyone has any ideas?

Outlook 2013 OST file growing crazy

Exchange is the server side of a collaborative application product that is part of the Microsoft Server infrastructure. Exchange's major features include email, calendaring, contacts and tasks, support for mobile and web-based access to information, and support for data storage.