Hi there,
The on-premises network connection (OPNC) periodically checks your environment to make sure that all requirements are met and are in a healthy state. If any check fails, you'll see error messages in the Microsoft Endpoint Manager admin center.
If provisioning fails, make sure that:
-The sync period configuration on Azure AD is set appropriately. Speak with your identity team to make sure that your directory is syncing fast enough.
-Your Azure AD is active and healthy.
-Azure AD Connect is running correctly and there are no issues with the sync server.
-You manually perform an Add-Computer into the OU provided for Cloud PCs. Time how long it takes for that computer object to appear in Azure AD.
Troubleshoot on-premises network connections
https://learn.microsoft.com/en-us/windows-365/enterprise/troubleshoot-on-premises-network-connection
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