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Exchange 2007 OleConverter Folder

Posted on 2009-12-17
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Last Modified: 2012-05-08
One of our mailbox servers has built up nearly 40GB in the C:\Program Files\Microsoft\Exchange Server\Working\OleConverter folder and this is consuming most of the system drive.  The files in here appear to be temp copies of various types of attachments dating back from today to when the server was built about 18 months ago.

The only references I can find to this folder relate to excluding it from virus scans.  I can't find anything relating to controlling its size - the other mailbox servers all have similar folders but varying in size from 6 GB to 17 GB, so not causing a problem (yet)!

Can these files be deleted (or should they be being cleaned up as part of a maintenance routine)?  Is the fact that these are building up to such a level indicative of some problem that we are overlooking?

Any advice would be greatly received!
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Question by:BLPIT
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Accepted Solution

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Glen Knight earned 1500 total points
ID: 26075568
the OLE Converter folder is a temporary folder used for OLE Conversion of known file types so they can be viewed in OWA.

They are only temporary files so there is no reason why they cannot be deleted.  Obviously back them up first.
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Author Comment

by:BLPIT
ID: 26095061
Thanks demazter.  I took a chance on deleting some of them anyway before your response - had no option as was about to head off for Christmas dinner but needed to clear some space! ;-)

It seems a bit silly that it requires manual intervention to clear out this folder, but I think I may put some scheduled tasks in place to clear things out every so often!
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Expert Comment

by:Glen Knight
ID: 26095072
I would have thought it would clear itself and maybe it's a bit like the old Word temporary files if it's not closed down properly it cannot delete the file? Just a hunch?
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Author Closing Comment

by:BLPIT
ID: 31667209
Had more or less worked the answer out myself already and taken the step suggested, but answer provided some reassurance that what I was doing wasn't going to cause any issues.
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Expert Comment

by:weavvvv
ID: 37238623
The Fix

I had to give the Network Service & Local Service accounts Full Control to the C:\Program Files\Microsoft\Exchange Server\Working folder and the OLEConverter folder as well. I rebooted the HUB Transport server and all the files disappeared.
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