I'm running IIS 10 on a Windows Server 2016 EC2 instance that sits behind an AWS ELB.
I've loaded a custom (signed) SSL Certificate on the ELB. When I attempt to load sites without https, they're loading fine - but the same site using https produced a 503 - Service Temporarily Unavailable Error. No other indications.
Whatever measures I've tried so far hasn't fixed it for me. I've tried:
- Application Pool Restarts
- Application Pool identities - both IIS User and Domain Users (making sure the same user has RW access to the application folders)
- Custom Error messages
Nothing appears to work or give me any indication on what is going wrong. Where can I find definitive logs that'll tell me what the issue is?