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ost file sizes

Hi

One of my users outlook 2010 machines was running awfully slow, hanging and sometimes crashed today. In the end i removed all the files from c:\users\user\appdata\local\microsoft\outlook\ and fired outlook online again to recreate the files. This old ost file was 9.5gb, the new one is 4gb.
What reason has it stayed so large. Her mailbox was 2.5gb and another shared mailbox was 2gb.
Does the ost files compresses itself automatically?

Thanks

SOLUTION

Lisa Hendrickson "CallThatGirl"

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SOLUTION

rindi

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Niten Kumar

Are you running on Exchange 2010 and does the user mentioned above have two mailboxes? Then there should be two new ost files created when you recreated the profile.

Edwin Hoffer

Dear User

If your OST file size gets too large then you can crop your OST file. I found article that will help you in resolving your thread. There are several reasons & failures resulting in oversized OST file like:
1. Data storage devices.
2. Network connection failure.
3. Sudden power failure.
4. Improper maintenance of files in the OST file.
So with the help of this blog you can Crop your Oversized OST if OST file size gets too large

Thanks & Regards
Edwin Hoffer

CHI-LTD

ASKER

Exchange 2010 hybrid with 365.

SOLUTION

Marshal Hubs

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ASKER CERTIFIED SOLUTION

Niten Kumar

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