Exchange 2010 SP1 or SP2 trouble with: The virtual directory 'PowerShell' already exists

Microsoft Exchange 2010 SP1 & SP2

Issue:

The following error was generated when "$error.Clear();

$vdirName = "PowerShell";

$InternalPowerShellUrl="http://" + $RoleFqdnOrName + "/powershell";

new-PowerShellVirtualDirectory $vdirName -InternalUrl $InternalPowerS

ellUrl -DomainController $RoleDomainController -BasicAuthentication:$false -Win

owsAuthentication:$false -RequireSSL:$false;

" was run: "The virtual directory 'PowerShell' already exists under 'US

LTEXMB01.epri.com/Default Web Site'.

Parameter name: VirtualDirectoryName".

This typically occurs after trying to fix an SP2 or SP1 install/update that went wrong.

1. On the offending Exchange Server open ADSIEDT.
2. Click on Action and select “connection”.
3. Select “Configuration” from the drop down in the “Connection Settings” dialog.

Diagram 1

1. Navigate to:
   1. CN=Configuration,DC=domain,DC=suffix
   2. CN=Services
   3. CN=Microsoft Exchange
   4. CN=[your domain]
   5. CN=Administrative Groups
   6. CN=Exchange Administrative Groups
   7. CN=Servers
   8. CN=[your server]
   9. CN=Protocols
   10. CN=HTTP
   11. Find the (in the right pane) CN=Powershell (Default Web Site), CN=HTTP… and delete it.

Diagram 2

1. Open the registry editor and navigate to
   1. KEY_LOCAL_MACHINE\SOFTWARE\Microsoft\ExchangeServer\v14\MailboxRole
   2. Find the “Action” key and delete it.

Diagram 3

1. Navigate to: (Shown in diagram 3)
   1. HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\SessionManager
   2. Locate the “PendingFileRenameOperations” key and delete it.

Diagram 4

1. Restart the setup fromnthe command line as shown in digram 4. NOTE: in my example I am using the:

Setup.com /mode:uninstall /roles:mailbox

1. You may be using:

Setup.com /mode:install /roles:mailbox for an install or upgrade, in my case I was uninstalling the server.

Diagram 5