Consider the following scenario – Exchange 2010 SP1 RU1 + Exchange 2007 SP3 mixed environment.
Internet Facing CAS Server is an Exchange 2010 SP1 RU1 CAS.
1.) Create a new User on Exchange 2007, open Outlook Web App 2010 to log on to Exchange 2007 Mailbox https://Exchange2010server/owa and Log On
2.) Select German as the Language when being prompted to select Language and Time Zone, click OK
This is a known issue at the moment, we are currently working to fix this.
Until the fix is out, we would like to provide you with the following workaround:
To do this, please adapt this Powershell command to your environment:
Get-OwaVirtualDirectory "Exchange2007cas\owa (Default Web Site)" |Set-OwaVirtualDirectory -DefaultClientLanguage 1033
They will have to manually go to options, Regional and language settings and set their language to German if needed.
We are currently working on the Fix, please be patient. We apologize for this inconvenience and thank you for your understanding.
If you have any questions, please send me an Email to firstname.lastname@example.org