8 people found this helpful
We ran into this same problem attempting to P2V 2012 and 2012 R2 servers. The account I was using had local admin, domain admin, enterprise admin, administrators group privileges with UAC disabled and still I was getting the "Permission to perform this operation was denied" error with "Must be administrator to access physical computer" in the log.
Finally I found a work around. On the machine I was converting I changed the Local Security Policy setting for "User Account Control: Run all administrators in Admin Approval Mode" to Disabled. I was then able to P2V the server. After the P2V I changed the setting back.
Another work around I had was to simply use the local "Administrator" account or run the converter from the server I'm P2Ving.
Thanks!! This worked for me.
Even simpler right click on the desktop App Icon and "Run as Administrator" this worked for me.