I had exchange 2013 installed on a virtual machine on my test Network, and it was working and I was able to send email to clients on my network. I tried to update exchange with cumulative update 20. I installed the prerequisite and after the update started, it crashed on Step 2. I reinstalled the virtual machine so I know it’s clean.
I have backed up the domain controller and the virtual machine I will install exchange server onto. I followed the instructions from different sites, and I think I have completely removed the previous exchange installation from the domain controller. Is there a powershell command that can help me confirm that I have completely removed all of the previous exchange installation from the domain controller.? I want to make sure that exchange will install correctly. Any assistance will be appreciated.