I get the same problem with JesterJeff69. But I have already settled the issue.
The key is the ISO file. I started by using a 'Windows Server 2008 R2.iso' that I downloaded almost 8 years ago. Then I download a recent version 'windows_server_2008_r2_sp1_x64_dvd.iso' and I can boot guest in uefi. The problem is solved.