![](https://learn.microsoft.com/media/logos/logo_edge.png)
Hi @Haibo Zhang ,
It looks like your Windows 10 cloud PCs haven't met the prerequisites, which says:
This policy is available only on Windows instances that are joined to a Microsoft Active Directory domain, Windows 10 Pro or Enterprise instances that enrolled for device management, or macOS instances that are that are managed via MDM or joined to a domain via MCX.
However, you can use separate configuration for your cloud PCs in Edge settings without GPO or registry:
Settings
--> Start, home, and new tabs
--> When Edge starts
--> Open tabs from the previous session
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Best Regards,
Shijie Li