A redirect loop occurs due to a 301 that should not have been set

[mizusawa]

What is the name of the domain?

example.com

What is the issue you’re encountering

Suddenly some of the CSS files on the site are in a 301 redirect loop, causing the site to look messed up.

What steps have you taken to resolve the issue?

• Confirm redirect setting

• Confirm DNS Setting

  • CNAME | name: example.com/ | target: example.pages.dev

• Purging the Cache → The problem is resolved immediately after, but after a few hours the 301 redirect occurs again.

• Change SSL encryption mode to Full (strict) mode instead of Flexible mode.

• I just tried this, and am not yet sure if it actually fixed the problem.

What feature, service or problem is this related to?

I don’t know

What are the steps to reproduce the issue?

Nothing. This happens randomly and suddenly. Even if you temporarily resolve the issue by deleting the cache, it may happen again after a few hours.

[mizusawa]

• • Confirm redirect setting*
  • example.com/test/* → 302: URL https:example.com/
  • www.example.com/* → 301: URL https:example.com/$1
  • test.example.com/* → 302: URL https:example.com/

[mizusawa]