"We can't sign into your account" is shown after restart on terminal server 2016

We installed a complete new server 2016 environment with 5 terminal servers in a farm. We also use User Profile Disks for the profiles.

The fault:
When the domain administrator is logged on to any terminal server and the terminal server gets started, we get after the logon of the domain administrator this message:

We can't sign into your account

... and the administrator gets a temporarily profile.

After logoff / logon the message isn't shown and the regular profile is loaded.

• We use the console logon for the rdp connection
• There is only one administrator logged on at one time
• The eventlog doesn't show any conspicuity.

Edit#1
From a comment: A similar error is described here: technet group. The cause in this case are DVDROM drives, which are connected to the location 1 on on the scsi-controller.

In my case the DVDROM drives are connected to SATA. For testing I removed the drives but the error still behaves.

BUT: This may be an hint, that also in my case the user profile disks couldn't be properly connected.