Hi ,
Please run the following PowerShell scripts:
get-dnsserverzone | where-Object{$_.zonetype -eq "Forwarder"} | remove-dnsserverzone -force
This script can delete all of your conditional forwarders.
Best Regards,
Candy
--------------------------------------------------------------
If the Answer is helpful, please click "Accept Answer" and upvote it.
Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.