As a temporary solution, I have removed the auto login portion of my unattend.xml file … I’m not sure if this is the ideal solution but it worked.
When I remove the autologin portion, I do not need to force FOG to rename when users are logged in. In the past, 1511 and 1607, it didn’t seem to mind the local administrator account being logged in after an imaging task to rename, join domain and reboot. It appears it matters now?
If I keep the autologin, I have to ensure FOG is set to force changes despite a user being logged in. For those using my unattend - remove this:
<AutoLogon>
<Password>
<Value>password here</Value>
<PlainText>false</PlainText>
</Password>
<Enabled>true</Enabled>
<LogonCount>1</LogonCount>
<Username>administrator</Username>
</AutoLogon>
If I had to guess, 1703 had a couple of changes that will require a FOG Client update.