Situation: The client is use Microsoft azure AadSyncService. They get this warning: The Health Agent(s) running on one or more servers is not connected to the Health Service and the Health Service is not receiving the latest data from this server. The last data processed by the Health Service is older than 2 Hours.
Troubleshooting:
Ensure that the health agents have outbound connectivity to the following service end points. It is possible that your firewall rules are blocking this connectivity.
- *.servicebus.windows.net(Port 5671)
- https://*.blob.core.windows.net
- https://*.queue.core.windows.net
- https://*.adhybridhealth.azure.com/
- https://*.table.core.windows.net/
- https://policykeyservice.dc.ad.msft.net/
- https://login.windows.net
- https://login.microsoftonline.com
- https://secure.aadcdn.microsoftonline-p.com
If you use HTTP Proxy servers for outbound traffic, you can configure Azure AD Connect Health agents to use HTTP Proxy settings.
If outbound connectivity is not blocked, restart the following services on each server:
- Azure AD Connect Health Sync Monitoring Service
- Azure AD Connect Health Sync Insights Service
