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Outlook .ost is in use

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cemerson22 Posts 2 Registration date Sunday November 27, 2016 Status Member Last seen November 28, 2016 - Nov 27, 2016 at 02:18 PM
cemerson22 Posts 2 Registration date Sunday November 27, 2016 Status Member Last seen November 28, 2016 - Nov 28, 2016 at 04:40 PM
Hello,
After I have installed Office Suite Service, i tried to start Outlook 2007. But when i attempted to start it a pop-up box stating: Outlook .ost is in use
Anyone have any suggestions how to repair ost? Any other information or advice?
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3 responses

Answer 1 / 3
Ambucias Posts 47310 Registration date Monday February 1, 2010 Status Moderator Last seen February 15, 2023 11,164
Nov 27, 2016 at 05:17 PM
Hello

Was it the first time you were using Outlook?
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Answer 2 / 3
captainashish Posts 20 Registration date Thursday May 12, 2016 Status Member Last seen November 28, 2016
Updated by Ambucias on 28/11/16 at 04:48 PM
Hello,

There might be many reasons behind this error :
1. Faulty synchronization of OST & Exchange
2. Unauthorized Login Attempts
3. Multiple Users Login Attempts at the same time
4. Internet Connection Errors

There are 2 methods to Repair OST File :

1.) Inbuilt Inbox Repair Tool
Outlook provides an inbuilt Utility ScanOST.exe also known as OST Integrity Check to repair OST File

2.) Disabling Cached Exchange Mode
OST file is automatically created when Cached Exchange Mode is turned on. So turning it off might solve the issue.
a.) Go to Control Panel -> Mail -> Email Accounts
b.) Choose Change
c.) Uncheck "Use Cached Exchange Mode"


Hopefully, this will help you resolve the issue.

Thanks & Regards,
Captain Ashish
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Answer 3 / 3
cemerson22 Posts 2 Registration date Sunday November 27, 2016 Status Member Last seen November 28, 2016
Nov 28, 2016 at 04:40 PM
2 years ago
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