Port 443 problems

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Having real problems forwarding port 443 on my router. I have done port forwarding before and managed it OK.
I have a new router. Maybe the router is using port 443?
Port 80 is fine.

Unfortunately you absolutely ignored the issue template and haven’t provided any valuable information concerning your installation, router, internet access etc.
How should anyone give you advice without information?

Additionally, to be honest, this isn’t really a Nextcloud specific issue and it might be better to

  • read the manual of your router.

  • contact your internet provider and ask for help how to configure your router.

  • contact the support of your router manufacturer and ask for help.