outlook 2010 increase .OST automatically.

[cheitac]

Hi all.

My Outlook data file (.ost) increase automaticallly it uses 49GB disk spase. after that it crashes or become unresponding. after deleting file and reopen outlook it connects server and download mails. after two or three dayes data file increase automatically. I use cached exchange mode and my inbox is only 1.5GB why outlook increase OST size to 49GB. how can i fix it?

I Try another computer and have same problem with that account.
thanks!

 

[2xg]

Welcome to Seven Forums,

Have you checked your Outlook's Folder Size and see which one is taking up a lot space -Inbox, Sent items, etc.?
You may move large files to your Archive folder.

Also, have you tried compressing the .ost file?
How to compact PST and OST files to eliminate deleted item space in Outlook

Have you talked to your Network/Exchange Admin? He can set a limit on your Mailbox Quota in Exchange Server to prevent this. Each employee in our network is limited bet. 2 to 5gb max per User mailbox.

Also, your issue need to be dealt with by your Network Admin.

 

[cheitac]

outlook .ost increase in size

Thanks for reply!

I have 5GB quota on exchange server. I'm interesting why network admin? what might be problem? I noticed that same problem have other three users too. i check inbox folder sizes and all are same size that situated on exchange. why outlook increase size?
thanks.

 

[2xg]

Did you manually delete the .ost file?

after deleting file and reopen outlook it connects server and download mails.

Why not remove the exchange email account from Control Panel>Mail then reconfigure email exchange account again? This will re-create a new .ost. Have you also done this? See attached file, I have erased sensitive info, just an FYI.

Also, are you guys using Microsoft CRM Add-on to your Outlook?

 

[cheitac]

outlook .ost increase aotomatically

Hi all!

We try to remove and recreate. but same occur. We try another new computer with new os too. there was same problem. i noticed that there are some users with same problems too and there numbers increase in weeks.

What might be problem?

 

[2xg]

I'd check the Event Viewer logs from Exchange Server, something is not right.

I have never encountered this type of issue yet, hopefully I won't.

 

[GEWB]

Thanks for reply!

I have 5GB quota on exchange server. I'm interesting why network admin? what might be problem? I noticed that same problem have other three users too. i check inbox folder sizes and all are same size that situated on exchange. why outlook increase size?
thanks.

Hmm, thinking out loud here...

Have the admin DOUBLE CHECK the user quota.

If I recall, using the Exchange Management Console (EMC) one sets the limits in KB, or if using the Exchange Management Shell one uses MB to set the limits.

It is really EASY to be "off" by a few digits so "5GB" becomes "50GB" (where 50GB becomes a 49GB file on the local hard drive) especially if you think you're using MB when it should be KB.

Keep us posted!

Regards,
GEWB

 

[cheitac]

user quota on server is true. i use GUI and set it in KB. on server side i think all is ok.

 

[GEWB]

Server value in KB = 5242880

Can you confirm?

Regards,
GEWB

 

[cheitac]

I have this configuration on one user who have same problem

 

[2xg]

Please try changing the Quota from the EMS. Try this on one User for now and see if it works.

Set-Mailbox -Identity [email protected] -IssueWarningQuota 209715200 -ProhibitSendQuota 262144000 -ProhibitSendReceiveQuota 293601280 -UseDatabaseQuotaDefaults $false

Source: Configure Storage Quotas for a Mailbox: Exchange 2010 Help