Exchange 2010/2013 Troubleshooting: Module DLL kerbauth.dll failed to load

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Background

Uninstalled Exchange 2010 and then installed Exchange 2013.

The setup ran fine but after the setup the following errors were logged every second on the Exchange Server:

Error message
"The Module DLL C:\Program Files\Microsoft\Exchange Server\V14\Bin\kerbauth.dll failed to load. The data is the error"

http://collaborationpro.com/wp-content/uploads/2015/02/error1-300x157.png

Solution:

Navigate to C:\Windows\System32\inetsrv\config and open ApplicationHost.config file with Notepad.

Locate the following entry:

  • <add name="kerbauth" image="C:\Program Files\Microsoft\Exchange Server\V14\Bin\kerbauth.dll" />

Change it from V14 to V15 and then reboot or do an IISRESET. After this all the errors should be gone.

The entry should read like this:

  • <add name="kerbauth" image="C:\Program Files\Microsoft\Exchange Server\V15\Bin\kerbauth.dll" />