Domain Controller keeps starting in Directory Service Restore mode


After installing the latest batch of Microsoft updates on one of my virtualized domain controllers. I needed to restart the virtual machine. Nothing interesting so far but when the virtual machine was started I logged on with the correct credentials and noticed that the virtual machine was started in

Check the safeboot parameter via bcdedit:

image

if the safeboot contains DsRepair the domain controller will start in Directory Services repair mode. I don’t know why or who changed the safeboot parameter. But I know how you can delete this value so the VM will start normally. Just run the following command to delete the DsRepair value: bcdedit /deletevalue safeboot and shutdown –r –t 10 to restart the virtual machine.

More information about Directory Services Restore mode can be found here.

2 thoughts on “Domain Controller keeps starting in Directory Service Restore mode

  1. habibalby

    Hello,
    This could happened only if the DC was restored from a Backup Vss/Domain Controller aware, as the virtual DC when its backed up it does enable DS restore mode to ensure that the DC will be restored without any issues.

    Start>Run “msconfig” on the domain controller you will see an option Directory Service Safe mode or AD safe mode.

    Reply
  2. habibalby

    Hello,
    This could happened only if the DC was restored from a Backup Vss/Domain Controller aware, as the virtual DC when its backed up it does enable DS restore mode to ensure that the DC will be restored without any issues.

    Start>Run “msconfig” on the domain controller you will see an option Directory Service Safe mode or AD safe mode.

    Reply

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