@EnterpriseArchitect , Thanks for posting in Q&A.
In General, Intune uses policies that help you manage settings on Windows PCs. Many Intune settings are similar to settings that you might configure with Windows Group Policy. However, it is possible that, at times, the two methods might conflict with each another. When conflicts happen, domain-level Group Policy takes precedence over Intune policy.
Starting with Windows 10 1803, there's a setting named MDMWinsOverGP can allow the IT admin to control which policy will be used whenever both the MDM policy and its equivalent Group Policy (GP) are set on the device. But it only applies to policies in Policy CSP. It does not apply to other MDM settings with equivalent GP settings that are defined in other CSPs. Here is a link with more details for the reference:
https://learn.microsoft.com/en-us/windows/client-management/mdm/policy-csp-controlpolicyconflict
To avoid issue, it is recommended to migrate policies from Group policy to Intune. You can analyze your on-premises GPOs using Group Policy analytics in Microsoft Intune. And then do migration. Here are some articles for the reference:
https://learn.microsoft.com/en-us/mem/intune/configuration/group-policy-analytics
https://learn.microsoft.com/en-us/mem/intune/configuration/group-policy-analytics-migrate
Hope it can help.
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