I recently installed a fancy new firewall for a client. Out of the box, the web filtering policies are blocking the installation of Office 365 apps from Microsoft. Curious, yes. The category responsible for blocking is Risky Downloads . Installing Office Apps? Risky, indeed. I had to add a Web Protection Exception with the following entries: ^([A-Za-z0-9.-]*\.)?microsoft\.com/ ^([A-Za-z0-9.-]*\.)?windowsupdate\.com/ ^([A-Za-z0-9.-]*\.)?officecdn.microsoft.com.edgesuite.net/ ^([A-Za-z0-9.-]*\.)?officecdn.microsoft\.com/ ^([A-Za-z0-9.-]*\.)?windows\.com/ What a wonky syntax. Can you guess what the firewall vendor is?
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