Hello,
Environment: Windows 2012 Standard Server | Windows 10 clients.
Recently, customer's ISP installed a modem/router on the network that was running DHCP. This caused their equipment to begin dishing out IP addresses. I eventually found this; disabled DHCP Service on the router, and re-enabled DHCP on the Domain Controller/DHCP/DNS server. Verified that client workstations were now correctly obtaining IP from the server.
We found however, that multiple client workstations are unable to correctly authenticate to the server. They first receive this message:
![126376-image.png][1]
[1]: /answers/storage/attachments/126376-image.png
During the process of troubleshooting, I found that the time on the workstation differed from that on the server by 2 minutes. Matching it addressed the issue on a few workstations, but issue remains on a few.
I see that a possible resolution is to remove and rejoin to the domain.
I've also flushed DNS from the server. DNS server Service restarted. Event Logs are clean.
Any other suggestions would be welcome.
Thanks in advance.
Regards,
Rudy