Hello @Bill
Thanks for reaching out to us, could you please check if your Microsoft.cdn and Microsoft.PolicyInsights have been added as below? Step by step guidance is here for your reference - https://learn.microsoft.com/en-us/azure/azure-resource-manager/troubleshooting/error-register-resource-provider?tabs=azure-portal
I hope it helps.
Regards,
Yutong
-Please kindly accept the answer if you feel helpful to support the community, thanks a lot.