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Do you have the URL license on your firewall? if you do you can create a custom URL category to only allow the required domains for updating with the AppID's. If you don't have the URL license, you still need the domains that need to be allowed. You could create a rule using fqdn address objects and AppID's, the only problem with this solution is that IP's are contantly changing. I think the default timer for fqdn refresh are 30min.

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