Change your DNS servers and then in an elevated command prompt execute:
netsh winsock reset
netsh int ip reset
ipconfig /release
ipconfig /renew
ipconfig /flushdns
And reboot.
PS. you can use only one between UPnP and Port-forwarding, so make sure only one is active.
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this worked perfectly thank you SO much this has been driving me up a wall recently
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You're welcome.