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Huge OST file

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Huge OST file - 31.Jan.2012 9:15:09 AM   
clum1

 

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One of my users (Outlook 2007, Exchange 2010) is having problems with her mailbox; she continually gets the message "Updating Inbox" in the status bar and performance is generally poor. I realise her mailbox is large (4.8Gb) but I'm not sure why her OST file is so huge - it sits at nearly 17Gb. I have deleted it and recreated it a couple of times but in each case it has grown to this massive size.
I can understand why her laptop would have problems dealing with a file that size, thus giving the mailbox performance issues, but I'm unsure as to why the file gets that big in the first place. I read somewhere that OSTs are generally bigger than the mailbox, but this seems excessive. Is it?
Is there any obvious errors to look for? Nothing untoward is in my event logs. Is my best bet to limit which folders are available to her offline?
Post #: 1
RE: Huge OST file - 31.Jan.2012 4:07:40 PM   
ace1701

 

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Have you tried deleting and recreating the Outlook profile?

You might also want to try logging in as her on a machine with Outlook 2010 to see if you have the same issue.


You may experience performance problems when you are working with items in a large .pst file or in a large .ost file in Outlook 2007


http://support.microsoft.com/kb/932086

< Message edited by ace1701 -- 31.Jan.2012 4:08:53 PM >

(in reply to clum1)
Post #: 2
RE: Huge OST file - 1.Feb.2012 11:17:22 AM   
clum1

 

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I haven't tried that - will give it a blast. Don't have Outlook 2010 unfortunately.

Thanks for the suggestions though.

(in reply to ace1701)
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RE: Huge OST file - 3.Feb.2012 10:59:31 AM   
barbyf

 

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Have you tried to use the Compact Now option in outlook to compress the .ost file?

I just came across this looking for a solution to something else and thought it may help. It's particularly referencing Outlook 2007 but the option is there in Outlook 2010 as well.

http://office.microsoft.com/en-us/outlook-help/change-email-account-settings-HP010006899.aspx

"To reduce the size of your .ost file, on the Advanced tab, click Offline Folder File Settings, and then click Compact Now."

(in reply to clum1)
Post #: 4
RE: Huge OST file - 3.Feb.2012 11:08:32 AM   
clum1

 

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thanks Barbyf; tried it but the file was up to 17Gb in size and compacting it on a relatively low-powered laptop was sloooow! I've persuaded her to shift some of the 5000 or so messages that were sitting in the root of her Inbox into a holding folder and that seems to be helping a bit...

(in reply to barbyf)
Post #: 5
RE: Huge OST file - 6.Feb.2012 6:23:50 AM   
clum1

 

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Err, not sure this is relevant to my question. I think you may have been intending to reply to another thread.
Post #: 6
RE: Huge OST file - 6.Feb.2012 4:08:07 PM   
gpoc

 

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There are a few reasons why the OST may be getting so large. Does the client have the outlook CRM add in installed? if so remove and reinstall, I've read some articles related to the add on causing problems.
Does the client have a bunch of large attachments in their mail? See if the client can clean up unneeded junk. A 4.8GB mailbox is getting on the larger side, especially if the client wants to run cached mode. Client education for managing their mailbox is going to go a long way.
Is the client truly a mobile user and needs the mailbox offline, online mode may help allot here. In that regard, do you allow clients to connect their outlook client via https/ssl, if so would they really need cached mode?
Deleting and letting Outlook recreate is the standard fix for this issue but it seems you've tried that already. Another option would to follow the practices documented in http://support.microsoft.com/kb/932086 and http://blogs.technet.com/b/exchange/archive/2007/12/17/3404552.aspx to limit what is being sent to the OST (I know the articles are getting old but the information is still valid for today's users)

just my two (ok maybe three) cents

Glenn

(in reply to clum1)
Post #: 7
RE: Huge OST file - 15.Mar.2012 12:18:17 PM   
clum1

 

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This is still ongoing for this user (as an aside, I - unfortunately! - have others with bigger mailboxes) who are OK. Have just noticed she is getting hammered with Sync Issues (there were several hundred for the last few weeks). The following is a typical entry. Any ideas what is causing it?

15:49:10 Synchronizer Version 12.0.6606
15:49:10 Synchronizing Mailbox 'User Name'
15:49:10 Synchronizing full items in folder 'Inbox'
15:49:10 The following message could not be downloaded (0x8000ffff):
15:49:10 The following message could not be downloaded (0x8000ffff):
15:49:10 The following message could not be downloaded (0x8000ffff):
15:49:10 The following message could not be downloaded (0x8000ffff):
15:49:10 The following message could not be downloaded (0x8000ffff):
15:49:10 The following message could not be downloaded (0x8000ffff):
|
|
yadda yadda yadda * several hundred lines (it differs)...
|
|
15:49:24 The following message could not be downloaded (0x8000ffff):
15:49:24 The following message could not be downloaded (0x8000ffff):
15:49:24 The following message could not be downloaded (0x8000ffff):
15:49:24 The following message could not be downloaded (0x8000ffff):
15:49:24 The following message could not be downloaded (0x8000ffff):
15:49:24 The following message could not be downloaded (0x8000ffff):
15:49:24 Done

(in reply to gpoc)
Post #: 8
RE: Huge OST file - 21.Mar.2012 1:49:08 PM   
derffg

 

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Is the client truly a mobile user and needs the mailbox offline, online mode may help allot here. In that regard, do you allow clients to connect their outlook client via https/ssl, if so would they really need cached mode?
Deleting and letting Outlook recreate is the standard fix for this issue but it seems you've tried that already.

(in reply to clum1)
Post #: 9
RE: Huge OST file - 22.Mar.2012 4:14:49 AM   
clum1

 

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Unfortunately, she is mobile and insist on having everything online at all times. I'm loathe to shipping it all out to PST files as they are a nightmare to manage...

(in reply to derffg)
Post #: 10
RE: Huge OST file - 29.Jun.2015 4:56:08 AM   
geetjit13

 

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There are so many professional tool available that can easily recover corrupt OST files to PST files. I would also like to suggest such an smart conversion manual technique : http://ostconversions.blogspot.com/2015/06/troubleshoot-ost-file-error-cannot-open-your-default-email-folders-file-xxxx.ost-is-not-offline-folder-file.html
Post #: 11
RE: Huge OST file - 3.Jul.2015 5:07:57 AM   
Menounosmaria786

 

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Using online automated toolkit like OST **** tool, this issue can be fixing easily as tool has PST split option for huge data. The free OST file Conversion software will show all steps. Visit and try now- http://www.free.openostinoutlook.net/

Get more- http://www.importostfiles.net/tool/
Post #: 12
RE: Huge OST file - 14.Jul.2015 12:41:25 AM   
eastman

 

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Thanks for sharing the information...
Post #: 13
RE: Huge OST file - 16.Jul.2017 4:26:08 AM   
nadyee1

 

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Try OST to PST Conversion Software and recover corrupted OST data and convert into Outlook PST format with all Emails, Contacts, calendar , Notes, entries, and journals.This software supports Windows 10, 8, 7, Vista, XP and MS Office 2016,2013, 2010, 2007, 2003, 2002 (XP).
Read more information about this software and free download click here http://osttopstconversion-software.blogspot.com

(in reply to eastman)
Post #: 14
RE: Huge OST file - 3.Aug.2017 4:58:45 AM   
jackiemills

 

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You can split your OST file to work smoothly on outlook email client. Checkout this application may it will help you. http://www.convertostfiletopst.com

Thanks

(in reply to nadyee1)
Post #: 15
RE: Huge OST file - 26.Aug.2017 8:05:04 AM   
WilliamFigueroa

 

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Checkout this tool, this tool help me in that case.
https://goo.gl/gorQ7G

Thanks

(in reply to jackiemills)
Post #: 16
RE: Huge OST file - 4.Sep.2017 5:16:06 AM   
unitexmac

 

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You can easily compact your oversize OST file with Recoveryfix for OST to PST tool. The software export huge OST file into PST file without changing the folder hierarchy and file structure. However, I would suggest you try demo version because after exporting OST file into PST file, the tool also has options to split huge sized PST file into compact and organizable sizes such as 1GB, 2GB, 3GB and so on.

Please check this tool from here: http://www.osttopstconverter.recoveryfix.com/

(in reply to WilliamFigueroa)
Post #: 17
RE: Huge OST file - 6.Sep.2017 5:38:32 AM   
LeePatridge

 

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Joined: 11.Jul.2014
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good

(in reply to unitexmac)
Post #: 18

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