ERR_CONNECTION_REFUSED after sonarr is installed (first time installation))

Sonarr version (exact version):
Mono version (if Sonarr is not running on Windows):
OS: Windows 10
Debug logs:
Description of issue:
ERR_CONNECTION_REFUSED after sonarr is installed (first time ever using it)

Additional Information:

When I install sonarr I get ERR_CONNECTION_REFUSED when then web interface opens. I have tried to install sonarr on a separate computer and it started instantly with no issues. I have also checked that it is allowed through the firewall, changed the default port to a few others with no improvement.

I have also installed radarr and jackett with with no connection problems.

Not sure if I’m missing something

Connection refused means it’s not running typically

So figure out why it’s not running; that link in the post template to get logs would be full of info