On a XG Firewall version 16 in gateway mode I keep getting sec_error_unknown_issuer on Firefox and err_cert_authority_invalid in Chrome when trying to access some https websites such as turnitinuk.com, support.microsoft.com and lcci.org.uk . The message in the browser also says the website cannot be accessed due to HSTS. The Firewall rule for internet browsing I set up allows access to any host on the internet and there is no scanning of http or https packets, no web filtering or application filtering is enabled. I have added these websites to the web exceptions in the firewall and I have also tried turning off micro-app discovery but this did not help.I have checked the root certificate authorities for the websites that are not opening and they are all saved in the XG Firewall. How do I fix this?
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