Endpoint Deployment Failing, Showing Unsupported Operating System

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Hello 3kidsinacoat,

I found this answer, can you tell us if it helps, please?

To address the issue of endpoint deployment failing with an "unsupported operating system" error, let's break down the potential causes and solutions based on the provided context:

Possible Causes and Solutions

1. Compatibility Matrix Signature:

   • Ensure that the EMS has downloaded the latest EMS/FCT upgrade & compatibility matrix signature from FortiGuard. This signature is crucial as it provides the necessary operating system support information for FortiClient versions.
   • Verify that the FortiClient version you are trying to deploy is supported on the Windows version of the endpoints in your Microsoft Entra environment.

2. Deployment Configuration:

   • Double-check the deployment configuration settings in EMS. Ensure that the correct endpoint groups are selected and that the deployment package is compatible with the operating systems of the endpoints.
   • Make sure that the security groups from Microsoft Entra include device objects, as EMS requires this to assign installers correctly.

3. Network and Firewall Settings:

   • Ensure that EMS has the necessary network access to the endpoints. This includes allowing SMB and RPC traffic (ports 445 and 135) and access to the LDAP server (ports 389 or 636 for LDAPS).
   • Verify that network discovery is enabled on both EMS and the endpoints.

4. Endpoint Configuration:

   • Check that the necessary services on the endpoints are set correctly, such as Remote Registry, Task Scheduler, and Windows Installer.
   • Ensure that local firewalls on the endpoints are configured to allow necessary traffic or are disabled for testing purposes.

5. Testing and Verification:

   • Conduct tests to ensure EMS can access and copy files to the endpoint directories (e.g., \\<endpoint>\C$\Windows\Temp).
   • Verify that EMS can open the remote registry and that endpoints can download packages from the FortiClient Installer URL.

Follow-ups and Clarification Questions

• Compatibility Check: Have you verified that the FortiClient version you are deploying is supported on the specific Windows versions in your Microsoft Entra environment?
• Deployment Configuration: Can you confirm that the deployment configuration in EMS is set up correctly with the appropriate endpoint groups and deployment packages?
• Network Access: Are there any network restrictions or firewall settings that might be blocking EMS from accessing the endpoints in the Microsoft Entra environment?
• Endpoint Services: Have you checked that all necessary services on the endpoints are running and configured correctly?

By addressing these areas, you should be able to identify and resolve the issue with the unsupported operating system error during deployment. If the problem persists, further investigation into the specific configurations and logs may be necessary.