Outlook Web Access on Exchange 2007 gives "service unavailable"
Just had a problem with my Exchange 2007 server where OWA was giving service unavailable.
I also had these errors in the event log
Event ID: 2268
Raw Event ID : 2268
Record Nr. : 3746
Source: W3SVC-WP
Category: None
Type : Error
Machine : ACISERVER2
Description:
Could not load all ISAPI filters for site/service. Therefore startup aborted.
Event ID: 2274
Raw Event ID : 2274
Record Nr. : 3745
Source: W3SVC-WP
Category: None
Type : Error
Machine : ACISERVER2
Description:
ISAPI Filter ‘C:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\aspnet_filter.dll’ could not be loaded due to a configuration problem. The current configuration only supports loading images built for a AMD64 processor architecture. The data field contains the error number. To learn more about this issue, including how to troubleshooting this kind of processor architecture mismatch error, see http://go.microsoft.com/fwlink/?LinkId=29349.
Basically, you (or the software you were installing) switched your IIS site where OWA is installed into either a 32bit mode or ASP.NET 1.1. Since Exchange 2007 Outlook Web Access 2007 only runs on ASP.NET 2.0 in 64bit mode, you need to fix it back.
The easiest fix that I found for this was to run the following
cscript C:\inetpub\adminscripts\adsutil.vbs SET W3SVC/AppPools/Enable32bitAppOnWin64 0
Once thats completed run
cd C:\Windows\Microsoft.NET\Framework64\v2.0.50727
aspnet_regiis.exe -i
Restart IIS and that should fix it..... did for me
Comments
That worked for me too. I just ran the most recent MS update (10/27/08)that srewed up OWA. Followed your procedure and it worked!!!
Posted by: Larry Pool | October 27, 2008 09:58 PM
This worked great for me! Thank you!
Posted by: Archie Pantoja | May 21, 2009 04:26 PM