We have a newly promoted Domain Controller that’s our first 2019 box in the domain. Our other DC is a 2012R2 box (we’ve migrated to DFS-R already). After promoting it to a DC I ran DCDIAG and got the following error so I manually created the CNAME record under the _mcds forward lookup zone but the error persists.
I have both domain controllers pointing to each other as the primary DNS and I’m using the loopback for the secondary and they can ping to each other. Also, I can ping “89d723f5-4355-4bc2-9854-705d364a2abf._msdcs.NY.domain.com” successfully.
Directory Server Diagnosis Performing initial setup: Trying to find home server... Home Server = OSTDC * Identified AD Forest. Done gathering initial info. Doing initial required tests Testing server: Default-First-Site-Name\OSTDC Starting test: Connectivity ......................... OSTDC passed test Connectivity Doing primary tests Testing server: Default-First-Site-Name\OSTDC Starting test: Advertising ......................... OSTDC passed test Advertising Starting test: FrsEvent ......................... OSTDC passed test FrsEvent Starting test: DFSREvent There are warning or error events within the last 24 hours after the SYSVOL has been shared. Failing SYSVOL replication problems may cause Group Policy problems. ......................... OSTDC passed test DFSREvent Starting test: SysVolCheck ......................... OSTDC passed test SysVolCheck Starting test: KccEvent ......................... OSTDC passed test KccEvent Starting test: KnowsOfRoleHolders ......................... OSTDC passed test KnowsOfRoleHolders Starting test: MachineAccount ......................... OSTDC passed test MachineAccount Starting test: NCSecDesc ......................... OSTDC passed test NCSecDesc Starting test: NetLogons ......................... OSTDC passed test NetLogons Starting test: ObjectsReplicated ......................... OSTDC passed test ObjectsReplicated Starting test: Replications ......................... OSTDC passed test Replications Starting test: RidManager ......................... OSTDC passed test RidManager Starting test: Services ......................... OSTDC passed test Services Starting test: SystemLog A warning event occurred. EventID: 0x80040020 Time Generated: 02/05/2020 15:19:59 Event String: The driver detected that the device \Device\Harddisk0\DR0 has its write cache enabled. Data corruption may occur. A warning event occurred. EventID: 0x80040020 Time Generated: 02/05/2020 15:19:59 Event String: The driver detected that the device \Device\Harddisk0\DR0 has its write cache enabled. Data corruption may occur. A warning event occurred. EventID: 0x80040020 Time Generated: 02/05/2020 15:19:59 Event String: The driver detected that the device \Device\Harddisk0\DR0 has its write cache enabled. Data corruption may occur. A warning event occurred. EventID: 0x000727A5 Time Generated: 02/05/2020 15:21:22 Event String: The WinRM service is not listening for WS-Management requests. A warning event occurred. EventID: 0x80040020 Time Generated: 02/05/2020 15:22:20 Event String: The driver detected that the device \Device\Harddisk0\DR0 has its write cache enabled. Data corruption may occur. A warning event occurred. EventID: 0x80040020 Time Generated: 02/05/2020 15:22:20 Event String: The driver detected that the device \Device\Harddisk0\DR0 has its write cache enabled. Data corruption may occur. A warning event occurred. EventID: 0x80040020 Time Generated: 02/05/2020 15:22:20 Event String: The driver detected that the device \Device\Harddisk0\DR0 has its write cache enabled. Data corruption may occur. An error event occurred. EventID: 0x0000168E Time Generated: 02/05/2020 15:22:54 Event String: The dynamic registration of the DNS record '89d723f5-4355-4bc2-9854-705d364a2abf._msdcs.NY.domain. 600 IN CNAME OSTDC.NY.domain.' failed on the following DNS server: An error event occurred. EventID: 0x00002710 Time Generated: 02/05/2020 15:23:00 Event String: Unable to start a DCOM Server: {9C38ED61-D565-4728-AEEE-C80952F0ECDE}. The error: An error event occurred. EventID: 0xC0001B61 Time Generated: 02/05/2020 15:23:10 Event String: A timeout was reached (30000 milliseconds) while waiting for the ADWS service to connect. An error event occurred. EventID: 0xC0001B58 Time Generated: 02/05/2020 15:23:10 Event String: The ADWS service failed to start due to the following error: An error event occurred. EventID: 0xC0001B61 Time Generated: 02/05/2020 15:23:11 Event String: A timeout was reached (30000 milliseconds) while waiting for the Windows Agent Service service to connect. An error event occurred. EventID: 0xC0001B58 Time Generated: 02/05/2020 15:23:11 Event String: The Windows Agent Service service failed to start due to the following error: A warning event occurred. EventID: 0x00001796 Time Generated: 02/05/2020 15:27:36 Event String: Microsoft Windows Server has detected that NTLM authentication is presently being used between clients and this server. This event occurs once per boot of the server on the first time a client uses NTLM with this server. A warning event occurred. EventID: 0x00001695 Time Generated: 02/05/2020 16:07:17 Event String: Dynamic registration or deletion of one or more DNS records associated with DNS domain 'NY.domain.' failed. These records are used by other computers to locate this server as a domain controller (if the specified domain is an Active Directory domain) or as an LDAP server (if the specified domain is an application partition). ......................... OSTDC failed test SystemLog Starting test: VerifyReferences ......................... OSTDC passed test VerifyReferences Running partition tests on : Schema Starting test: CheckSDRefDom ......................... Schema passed test CheckSDRefDom Starting test: CrossRefValidation ......................... Schema passed test CrossRefValidation Running partition tests on : Configuration Starting test: CheckSDRefDom ......................... Configuration passed test CheckSDRefDom Starting test: CrossRefValidation ......................... Configuration passed test CrossRefValidation Running partition tests on : ost-ny Starting test: CheckSDRefDom ......................... ost-ny passed test CheckSDRefDom Starting test: CrossRefValidation ......................... ost-ny passed test CrossRefValidation Running enterprise tests on : NY.domain Starting test: LocatorCheck ......................... NY.domain passed test LocatorCheck Starting test: Intersite ......................... NY.domain passed test Intersite