Archived old email / no change to size of OST file

Hi - I have a user that has a 38gb ost file - I archived about 10gb it, yet the ost file is still 38gb. I was under the impression that when you archive, it shrinks the ost file. Any help would be appreciated.
hodgemAsked:
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JohnBusiness Consultant (Owner)Commented:
See if you can see the properties of the OST file in the left hand tree of Outlook. Then Data File Properties, Advanced, and click on Compact. This is a large file, so it will take a long while to compact. No, it is not automatic.
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arnoldCommented:
Archiving data shrinks the used space within the file, it does not shrink the file's size unless you run the compact process.
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rindiCommented:
Delete the OST file and it will rebuild to a smaller file. But as it is so large make sure you have enough time to do that....

If this is a stationary PC, an OST file doesn't make much sense anyway. In that case I would disable cached mode. OST files are only of some use if you don't always have a network connection to the exchange server, for laptops which are often offline for example.
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hodgemAuthor Commented:
that did the trick - thanks!
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JohnBusiness Consultant (Owner)Commented:
@hodgem  - You are very welcome and I was happy to help.
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