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Today, I was handing this issue and thought of sharing as there is no other blog available.

Issue:

In this environment Owa was working just fine.

No other issue reported with Exchange 2013.

When we tried to open the ECP, we got the following error.

HTTP Error 500.21 – Internal Server Error

Handler “StaticFile” has a bad module “DefaultDocumentModule” in its module list.

The good thing about this error page is that it tells the resolution in Things you can try:

Troubleshooting:

-Checked the web.config at c:inetpubwwwroot folder. No issue found.

-Checked IIS all looked good but DefaultDocumentModule found missing at IIS à Default Web Site à ECP à Modules

And at IIS à Exchange Back End à ECP à Modules

-Checked the applicationhost.config file for the modules at c:windowssystem32inetsrvconfig for the following entries. These entries were missing on this server.

<globalModules>

<addname=”DefaultDocumentModule”image=”%windir%system32inetsrvdefdoc.dll”/>

<modules>

<add name="DefaultDocumentModule" lockItem="true" />

-Ran the below cmd to add the Module.

c:windowssystem32inetsrvappcmd.exe install module /name:DefaultDocumentModule /image:%windir%system32inetsrvdefdoc.dll

You should see the below screen

If the module is already present then you will see the below screen

-Did IISReset

Issue got fixed.

 

 

 

Prabhat Nigam

Microsoft MVP | Exchange Server

Team@MSExchangeGuru

Posted January 21st, 2014 under ECP, Exchange 2013, OWA. RSS 2.0 feed. Leave a response, or trackback.