I recently installed Sophos XG firewall on my home system. When I enable a web policy in the predefined default network rule, I get invalid certificate errors when browseing certain websites, for example Facebook. FB will not allow any access. I have gone into System-->Certificates and there is a certificate called Appliancecertificate. When I click the manage icon, it goes and gets a new copy without error. However that does not fix the problem.
Importing a certificate into my Windows machine will not work, because my wife also accesses FB using her cell phone.
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