OWA2010 Problem after installation of Exchange 2010 SP1 Rollup1

schedlbauerm used Ask the Experts™
OWA 2010 problem after installation of rollup1 for exchange 2010 sp1


Yesterday I installed the rollup1 of exchange 2010 sp1.

Now I have problems with OWA 2010.

After the OWA-Login I receive the following error messages:

Outlook Web App konnte nicht initialisiert werden.
Es wurde kein Basisdesign gefunden.
Das Basisdesign muss sich in einem Ordner mit einem Namen = "base" befinden.

Outlook Web App konnte den folgenden Designordner nicht laden: C:\Program Files\Microsoft\Exchange Server\V14\ClientAccess\owa\\themes\viol et

Die folgenden Dateien fehlen: premium.css, gradienth.png, gradientv.png, csssprites.css, csssprites.png, csssprites2.css, csssprites2.png

The english translation would be:

OutlookWebApp could not be initialised. No base design was found. The base design should be located in a directory named "base".

On the exchange server the eventids are 26 and 116. The event source is 'MSExchange OWA'.

Kind regards,


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At my test-lab:
C:\Program Files\Microsoft\Exchange Server\V14\ClientAccess\owa\\themes\
basic folder has got 264 items
base folder has got 28 items

while the E2k10 RTM has got 638 items

1. Want to check if the items are matching with this or any other test-machine you have

Go to exchange management shell and typ the following:

Test-OutlookWebServices -identity firstname.lastname@yourdomain.com | ft -AutoSize

Post your results here.

Also do the following:
Go to exchange management shell and type in the following:

Set-WebServicesVirtualDirectory -Identity “ExchangeServerName\EWS (Default Web Site)” -InternalUrl https://webmail.yourdomain.com/ews/exchange.asmx 
Set-OABVirtualDirectory -Identity “ExchangeServerName\oab (Default Web Site)” -InternalUrl https://webmail.yourdomain.com/oab 
Set-ClientAccessServer -Identity ExchangeServerName -AutodiscoverServiceInternalUri https://webmail.yourdomain.com/autodiscover/autodiscover.xml

owa failed to initialize after install of rollup 1 for exchage sp1

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

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