@AB123 , Thanks for posting in Q&A.
For your issue, to clarify it, you can check the following information:
- Check the policy deployment status in the Intune Portal to see if i is successful.
- Verify that update policies if they are managed by MDM
- Verify that the Registry keys if they are properly configured
To see more details, you can refer to the following link:
https://techcommunity.microsoft.com/t5/intune-customer-success/support-tip-troubleshooting-windows-10-update-ring-policies/ba-p/714046
Hope it can help.
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