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Exchange 2010 OWA Runtime Errors

Posted on 2013-12-18
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Last Modified: 2013-12-24
Had to reset virtual directories on our Exchange 2010 server and now get runtime errors on all virtual directories we attempt to access. Have verified the dill file paths are correct in web.config. Event Viewer shows the following errors:

3008
   A configuration error has occurred.
   12/18/2013 2:14:00 PM
   12/18/2013 8:14:00 PM
   73e9cb99eb6546089866e81f3c67a0e0
   1
   1
   0
   /LM/W3SVC/1/ROOT-5-130318712400737620
   Full
   /
   C:\inetpub\wwwroot\
   EXCHANGE
   
   4316
   w3wp.exe
   IIS APPPOOL\DefaultAppPool
   ConfigurationErrorsException
   Could not load file or assembly 'Microsoft.Exchange.Clients.Owa' or one of its dependencies. The system cannot find the file specified.
   https://exchange.domain.com:443/oab/41d3cff8-9fdd-4041-b6f2-40265ddf3039/oab.xml
   /oab/41d3cff8-9fdd-4041-b6f2-40265ddf3039/oab.xml
   192.168.10.86
   
   False
   
   IIS APPPOOL\DefaultAppPool
   1
   IIS APPPOOL\DefaultAppPool
   False
   at System.Web.Configuration.ConfigUtil.GetType(String typeName, String propertyName, ConfigurationElement configElement, XmlNode node, Boolean checkAptcaBit, Boolean ignoreCase) at System.Web.Configuration.Common.ModulesEntry..ctor(String name, String typeName, String propertyName, ConfigurationElement configElement) at System.Web.HttpApplication.BuildIntegratedModuleCollection(List`1 moduleList) at System.Web.HttpApplication.GetModuleCollection(IntPtr appContext) at System.Web.HttpApplication.RegisterEventSubscriptionsWithIIS(IntPtr appContext, HttpContext context, MethodInfo[] handlers) at System.Web.HttpApplication.InitSpecial(HttpApplicationState state, MethodInfo[] handlers, IntPtr appContext, HttpContext context) at System.Web.HttpApplicationFactory.GetSpecialApplicationInstance(IntPtr appContext, HttpContext context) at System.Web.Hosting.PipelineRuntime.InitializeApplication(IntPtr appContext)
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Question by:tamray_tech
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6 Comments
 
LVL 63

Expert Comment

by:Simon Butler (Sembee)
ID: 39728120
What build level of Exchange 2010 are you on, what is the host OS and what is the latest version of netframework that you have installed?

Simon.
0
 

Author Comment

by:tamray_tech
ID: 39728198
Version 14.3 (Build 123.4)

Rollup 4

2008 R2

.Net Framework 4 Client profile
.Net Framework 4 Extended
0
 
LVL 63

Expert Comment

by:Simon Butler (Sembee)
ID: 39728574
Looks like the app pools are wrong.
How did you reset the virtual directories? Did you use the manual Shell method, or did you use the wizards in EMC?

Simon.
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Author Comment

by:tamray_tech
ID: 39729297
Used the GUI.
0
 

Accepted Solution

by:
tamray_tech earned 0 total points
ID: 39729310
Fixed the issue doing the following:

Browsed to:C:\Windows\Microsoft.NET\Framework64\v2.0.50727\Temporary ASP.NET Files

change the owa directory to owa.old

replaced OWA web.config with copy from another virtual directory

restarted IIS


Works now
0
 

Author Closing Comment

by:tamray_tech
ID: 39737614
Solution fixed the problem
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