Tryed to uninstall excxhange server 2007 from a server. I get the following error "Unable to determine the installed file version from the registry key 'Software\Microsoft\exchange\Setup'. Unable to access the registry to retrieve the language identifier information." How do I fix this problem.

You could try a reinstallation using Setup.com /Mode:RecoverServer, then try uninstalling again.Ed Crowley MVP "There are seldom good technological solutions to behavioral problems."

Hi Timsa, Ed’s suggestion is good. Please follow his suggestion to have a try. RecoverServer Use this mode when there has been a catastrophic failure of a server, and you need to recover data. You must install a server using the same fully qualified domain name (FQDN) as the failed server, and then run Setup with the /m:RecoverServer switch. Don't specify the roles to restore. Setup detects the Exchange Server object in Active Directory and installs the corresponding files and configuration automatically. After you recover the server, you can restore databases and reconfigure any additional settings. To run in RecoverServer mode, you can't have Exchange installed on the server. The Exchange server object must exist in Active Directory. You can only use this mode during an unattended installation. Here is a related document for you: Install Exchange 2010 in Unattended Mode http://technet.microsoft.com/en-us/library/aa997281.aspx Thanks, EvanPlease remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.