I accidentally removed "Everyone" from the "Access this computer from Network" in the Domain Level Security Policy. Now I cannot access the MMC to make any changes to the Active Directory and all Active Directory dependent services fail. The computer is a root domain controller in a forest of itself only. The M$FT method of editing the GP Templates and then forcing a change by SECEDIT did not work and I still cannot access the AD. I cannot delete the AD using DCPromo either because it requires that AD authenticate the person who is uninstalling! I deleted the SYSVOL and reinstalled W2K Server but it came back with the same Secutity Policies!! Is there a brute-force way to reset the Security Policies to default without formatting the drive and doing a clean install? Are there any files I can delete to remove AD and the domain so I can reinstall AD? Thanks!