Outlook Web App didn’t initialize

By | 23 February, 2013

Outlook Web App didn’t initialize. If the problem continues, please contact your helpdesk. Couldn’t find a base theme (folder name=base)

This error is caused, when the base theme for the OWA is missing in \ClientAccess\Owa\\themes.

You solve this issue by running the following command in a Exchange Managment Shell:

“C:\Program Files\Microsoft\Exchange Server\V14\Bin\UpdateCas.ps1?

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