Here is a video I shot a while back that demonstrates how to use ADSI Edit to find the number of RIDs remaining in your domain. However, you can do this more quickly by running the following command: dcdiag /test:ridmanager /v | find /i "available...

When you run adprep /forestprep, you are updating the Active Directory schema forest version. Several people have asked, what is the forest schema version for Windows Server 2008 R2. To learn more about adprep and forestprep and schema versions, read...

A common warning message for anyone who has installed Active Directory on Windows Server 2008 or Windows 2008 R2, especially on the first domain controller in a forest or domain is: A delegation for this DNS server cannot be created because the authoritative...