Hi All
We had an environment with a 2003 x86 DC and a separate 2008 R2 terminal server. About 20 HP Thin clients authenticate in and receive various desktops from the 2008 TS. There are about 5 GPOs setup.
The 2003 Server was reaching eol so a new 2008 R2 was brought in. I ran adprep on the 2003 and the new 2008 is now acting as a DC after dcpromo along with the 2003 x86. I thought everything had replicated over. As a test before any final decommisioning steps on the 2003 DC or operation role changes we shut it down to be sure all was ok. The Thin Clients could NOT authenticate in when making their RDP to the Terminal Server. "No Domain Controller is available to process the request". As soon as the 2003 was brought up they could sign in. While the 2003 was down I could log in to the new 2008 R2 DC and see all the GPOs and user accounts.
Any obvious thoughts? I will say that two years ago I replaced a 2003 Terminal Server with the current 2008 R2 terminal server and that was smooth (for the most part after I found out we needed new licenses).