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HTTP error 500 when adding attachments using OWA 2003

Posted on 2006-06-27
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Last Modified: 2008-01-09
I am unable to add attachments is OWA 2003, I thought it may be URLscan so I uninstalled it then reset IIS and now I am still having the issue, other than that OWA is working great. Does anyone have any idea why this is happening?
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Question by:rodericklm
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by:mvvinod
mvvinod earned 400 total points
ID: 16998305
Download OWA administration tool from microsoft and check the OWA settings on the server to make sure attachments are allowed...

Also in IE, open options-> Advanced-> Uncheck "show friendly http error messages". This will exactly tell you what erorr you are getting in 500's error.

Vinod.
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Author Comment

by:rodericklm
ID: 17002438
I have done a little more research and I noticed that I can attach a file as long as it is under 50k.
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Expert Comment

by:Sembee
ID: 17002891
I have seen AV do this. It is scanning the file and causes a time out.
Make sure that any AV on the server itself is not scanning any of the Exchange directories.

Simon.
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Author Comment

by:rodericklm
ID: 17003782
The Exchange folder is excluded from scanning.
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Author Comment

by:rodericklm
ID: 17019449
I forgot to mention that this server was an Exchange 2000 server that was upgraded to Exchange 2003, the OS is still Windows 2000. Also I loaded the OWA Admin tool and it does not seem to work with IIS5. I also turned off the friendly http error messages in IE and the when I try to attach a file over 50k the screen just goes blank.
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Expert Comment

by:Sembee
ID: 17019615
Where did you install the OWA Admin tool? On the server itself or on a workstation?
As you did an inplace upgrade, I would have to suspect that there could be something wrong there. I don't do inplace upgrades because they usually cause a problem somewhere.

Simon.
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Author Comment

by:rodericklm
ID: 17043718
I have loaded the OWA admin tool on my workstation and I am able to successfully connect to the Exchange server. My Attachment Handling settings are set to "Allow all attachments (default)"
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Expert Comment

by:Sembee
ID: 17046615
The only thing I can suggest is to remove the antivirus software, and possibly anything else that could be interfering.
Otherwise I would suspect that it was the inplace upgrade, and a rebuild of the Exchange server needs to be scheduled.

As I have already stated - I don't do inplace upgrades - because I find that they are too problematic.

Simon.
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Author Comment

by:rodericklm
ID: 17048572
I totally rebuilt this server (Windows 2003 and Exchange 2003) and I am still having the same issue, what the......?
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Accepted Solution

by:
Sembee earned 1600 total points
ID: 17049360
What happens if you use OWA directly on the server?

http://localhost/exchange

Simon.
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Author Comment

by:rodericklm
ID: 17054919
Same issue.
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Expert Comment

by:Sembee
ID: 17055081
Very unusual for something like this to survive a rebuild of the server. That would indicate it is something you are doing that is causing the problem - as opposed to an error somewhere.

Is it a clean installation with just Exchange and Windows, or has anything else at all been installed on to this machine.

Simon.
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Author Comment

by:rodericklm
ID: 17062769
After further investigation I had InfoSec take a hard look at the firewall again and they found that the firewall was dropping webdav packets because it thought that they were attacks. Thanks for your help.
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