Exchange 2010 OWA loading Blank Page

If your Exchange 2010 OWA is loading with a blank page internal and external it may be due to a recent Exchange update. After installing this update, when you browse to your OWA page the URL will change to something similar to https://mail.domainname.com/owa/auth/logon.aspx?url=https://mail.domainname.com/owa/&reason=0

To fix this, open Exchange Management Shell, and enter the below commands

  1. CD "C:\Program Files\Microsoft\Exchange Server\V14\Bin"
  2. updatecas.ps1

Once the updatecas.ps1 command has finished just reload your OWA page.

 

Reference : http://www.msexchangeblog.nl/2010/05/11/blank-page-in-owa-fix-for-exchange-2010/

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