It all began last night when I tried to install CU3. The uninstall of CU1 has been problematic to say the least
Today the CU1 update almost completed then stopped with a dialogue box as shown below
When I point the dialogue box to the Install CD for Exchange 2013 (the only source I know of) it says its not a valid source
I have tried downloading CU1, and KB2874216 and reinstalling but each reports the other needs to be removed first
