Re: Uninstall of Office Communicator broke Windows Messenger

I found the fix...Office Communicator set the "PreventRun" registry
key for Windows Messenger but didn't remove it on uninstall.

For the benefit of anyone else who can't get Windows Messenger 5.1 to
start after uninstalling Office Live Communicator, just set the
following registry key to "0" (off).

[HKEY_CURRENT_USER\Software\Policies\Microsoft\Messenger\Client]
"PreventRun"=dword:00000000

BTW, you can find info on the latest version of Windows Messenger 5.1
here:
http://support.microsoft.com/kb/899283
.

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