As a follow up to upgrading AD to 2012R2, I wanted to transfer all the roles off the legacy DC. When I went to register the schema management.dll using regsvr32 in a run dialog box, like this…
I got spanked with this.
The module “schmmgmt.dll” was loaded but the call to DllRegisterServer failed with error code 0x80040201.
User Account Control (UAC) doesn’t let us do this directly from a run dialog. To do this and get it to work, you need to run this from an administrative command prompt.
Running the same command this way
and more to the point, lets you run the Active Directory Schema Management console.