Remove protected Organizational Units from AD
By Anatoly Mironov
To remove a protected OU, go to ADUC (Active Directory Users and Computers), select the domain and enable “Advanced Features” in View. When Advanced Features are enabled, just right click you OU go to Properties -> Object and uncheck “Protect against accidential deletion”. Disable Advanced Features after that. By the way. When Advanced Features are enabled you can even see the distinguished Name of objects directly in ADUC UI.