We started receiving this message recently on one of our Operations Manager administrator consoles. The message came from a system where this has previously been working. The message was “Failed to launch Microsoft Word. Please make sure Microsoft Word is installed. Here is the error message: The server threw an exception. (Exception from HRESULT: 0x80010105 (RPC_E_SERVERFAULT))
It looks like kb2251419 is breaking the ability to edit company knowledge per the thread below:
Just posting this in case others are running into it!