Hello, Recently added two Windows 2016 domain controllers and made one of the them the new PDC (the intention is to demote the old 2012 servers soon). After the change, when updating DNS settings in two file servers, they are unable to sync to the NTP and time keeps changing to CMOS, also state is pending (see screenshot) Registry was configured in the PDC with type NTP, the rest uses type NT5DS. If reverting at least one of the DNS server settings to the old server then the file server synchronizes properly. Other servers in the domain don't have this issue. ![81291-image.png] : /answers/storage/attachments/81291-image.png Thank you!