Issue Moving LCS 2005 Users to OCS 2007 R2 Hosted on 2008 R2 Server

Recently I was migrating from LCS2005 to OCS20007R2 for a client and was receiving errors when trying to move users between the pools. The specific error code was"0xC3F75809 “Cannot move user to pool.” “Either the pool to which the move happens is not running or you have no credentials for the operation. Make sure the server is running and you have appropriate credentials for the operation."

Note that if you’re OCS2007 installation is running on Windows 2008R2 you will need to install SP1. The other option is to make a “DisableLoopbackCheck” registry key.

Follow these steps to do so:

1. Click Start, click Run, type regedit, and then click OK.
2. In Registry Editor, locate and then click the following registry key: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Lsa
3. Right-click Lsa, point to New, and then click DWORD Value.
4. Type DisableLoopbackCheck, and then press ENTER.
5. Right-click DisableLoopbackCheck, and then click Modify.
6. In the Value data box, type 1, and then click OK.
7. Quit Registry Editor, and then restart.