Hello,
I understand the frustration you must be facing with this authentication error while integrating SCOM with Azure AD. Let's try to troubleshoot the issue and find a solution:
Check Azure AD Application Settings: Ensure that the Azure AD application you created for SCOM has the correct permissions and settings. Double-check the application's Client ID, Client Secret, Redirect URI, and other configurations to make sure they are accurate and match the settings in your SCOM configuration.
Permissions and Consent: Verify that the Azure AD application has been granted the necessary permissions to access the required resources in Azure AD. Additionally, check if the application requires user consent, and if so, ensure that it has been consented to by an administrator.
Network Connectivity: Ensure that there are no network-related issues preventing SCOM from communicating with Azure AD. Check for any firewalls, proxies, or other network restrictions that might be interfering with the authentication process.
Time Synchronization: Make sure that the system clocks on both the SCOM server and Azure AD are synchronized. Time differences can sometimes cause authentication failures.
Token Issuer URL: Verify that the token issuer URL in SCOM is set correctly to the Azure AD endpoint. If the URL is incorrect or outdated, it could lead to authentication failures.
Update SCOM and Azure AD Connect: Check if there are any updates or patches available for SCOM and Azure AD Connect. Keeping both software components up-to-date might resolve compatibility issues that could be causing the problem.
Review Logs: Examine the SCOM logs and Azure AD logs for more detailed error messages. These logs can provide valuable insights into what might be causing the authentication failure.
Azure AD Sign-Ins: Monitor Azure AD sign-ins to check if the authentication attempts from SCOM are being recorded. This can help determine if the requests are reaching Azure AD and being processed.
Azure AD Service Outages: Check the Azure status page to ensure there are no ongoing service outages or disruptions that could be affecting the authentication process.
Reach Out to Microsoft Support: If all else fails, consider reaching out to Microsoft Support for further assistance. They can provide specific guidance based on your environment and configuration.
As you go through these troubleshooting steps, you might be able to identify the cause of the authentication error and take appropriate action to resolve it. Good luck, and I hope this helps you get your SCOM integration with Azure AD up and running smoothly! If you have any further questions or need more assistance, feel free to ask.