Cloudfront custom-origin distribution returns 502 “ERROR The request could not be satisfied.” for some URLs

Question

We have a Cloudfront distribution with custom origin that has been working just fine for quite a long time, serving static assets for one of our sites. Just this morning, we

Answer 1

For my particular case it was due to the fact that the Origin ALB behind my CloudFront Behavior had a DEFAULT ACM certificate which was pointing to a different domain name.

To fix this I had to:

1. Go to the ALB
2. Under the Listeners tab, selected my Listener and then Edit
3. Under the Default SSL Certificate, choose the correct Origin Certificate.