@Porat Arzouan , Based as I know, windows 10 versions 1709 and earlier Group Policy will override MDM policies, even if an identical policy is configured in MDM. On Windows 10 version 1803 and beyond there is a new Policy CSP setting called ControlPolicyConflict that includes the policy of MDMWinsOverGP, where the preference of which policy wins can be controlled, i.e. Microsoft Intune MDM policy. We can see more details in the following link:
https://learn.microsoft.com/en-us/windows/client-management/mdm/policy-csp-controlpolicyconflict#controlpolicyconflict-mdmwinsovergp
Meanwhile, share a link I find with a detailed description of this:
https://www.anoopcnair.com/windows-10-mdm-csp-policies-override-group-policy-settings/
Note: Non-Microsoft link, just for the reference.
Hope it can help.
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