Domain Controller Not Advertising as Time Server


Symptom(s)

Domain controller is not advertising as the time server

The Windows client time source appears as local instead of synchronized with the domain controller.

Issue

The command w32tm /query /configuration shows Domain Controller w32tm time source as local.

The command nltest indicates the PDC is advertising TIMESERV, but the windows clients are not synchronized with the domain controller's time.

Resolution

If the time source for a domain controller is missing, follow the steps below to verify or configure the time synchronization settings:
### Procedure to verify and configure time source:
1. Check time synchronization settings:
- Log into the domain controller using an account with appropriate administrative privileges.
- Open PowerShell and execute the command below to display the current time settings:
```
w32tm /query /status
```
2. Configure NTP source manually:
- Open PowerShell and navigate to the correct directory:
```
cd C:\Program Files\Motorola\AstroDC\common\scripts
```
- Use the appropriate configuration script to set the NTP servers for the domain controller:
```
.\SetNTPConfiguration.ps1
```
3. Default NTP server configuration:
- The NTP servers for domain controllers depend on system implementation:
- Non-DSR systems:
- Use `ntp02.zone*` and `ntp03.zone*`.
- DSR-enabled systems:
- For Primary Core: `ntp02.zone*`, `ntp03.zone*`
- For Backup Core: `ntp05.zone*`, `ntp06.zone*`
4. Force time synchronization and verification:
- To enforce synchronization:
```
w32tm /resync
```
- To verify the synchronization logs:
```
w32tm /query /configuration
```
5. Ensure message validity:
- Verify that the time difference between the domain controller and any Windows-based devices in the Active Directory domain is less than 2 minutes. This ensures proper operation of authentication protocols like Kerberos.
If these steps do not resolve the issue, refer to the "Network Time Protocol Server Feature Guide" and "Virtual Management Server Software User Guide" for detailed troubleshooting techniques specific to your ASTRO®25 system environment.