ADPREP Error – Promoting Windows Server 2016 in 2008 R2 Forest/domain

When promoting a Windows Server 2016 to DC, adprep fails with an error that an attribute or value already exists. I am unsure if I caused this by attemping to add mutiple DC’s at the same time (race condition). Error: The DN is CN=Send-As,CN=Extended-Rights,CN=Configuration,DC=. The error logs were located: C:\Windows\debug\adprep\logs\ The ADPrep log will point […]


Set up the Default Domain for vCenter Single Sign-On | Tech-Short

vCenter Single Sign by default requires the user to specify the domain during authentication with vCenter. Example: JERMSMIT\admin or admin@JERMSMIT.LAB. You can eliminate the need to insert the domain in the username by following the following steps.   Log in to the vSphere Web Client as administrator@vsphere.local or as another user with vCenter Single Sign-On administrator […]

Software Technical

How to demote a Windows Server 2012 Domain Controller

In this short write up I will go over steps to demote a Server 2012 domain controller. If you have worked in Active Directory and Windows Domain Administration over the years you may recall that in previous version of Windows Server that you would use the command line tool of ‘DCPROMO’ to promote or demote […]