@leocg
Thanks for testing.

The “403 Forbidden” result is likely caused by our country/IP blocking rules, because we intentionally block traffic from several countries. If you are accessing the site from a blocked region, the 403 response is expected and is unrelated to the Opera-specific redirect issue.

If possible, please test again from a German IP address or via a VPN endpoint in Germany. The issue I am investigating is specifically this:

Chrome / Firefox / curl: website loads correctly
Opera Stable 131.x on Windows: redirects https://www.klimalex.de/ to http://127.0.0.1 from disk cache

So your 403 result may be a separate access-control case.

Hello,

I operate the ecommerce website https://www.klimalex.de/.

On multiple independent Windows systems (including Windows 10 and Windows Server 2019), Opera Stable (versions 131.0.5877.24 and 131.0.5877.55) redirects my site to http://127.0.0.1, showing ERR_CONNECTION_REFUSED.

Observations:

• The site is reachable in Chrome, Firefox, and curl.
• curl with an Opera User-Agent correctly returns HTTP/1.1 200 OK and resolves to 178.250.9.119.
• DevTools Network in Opera shows:
  • www.klimalex.de → 301 Moved Permanently (from disk cache)
  • Next request → 127.0.0.1 → net::ERR_CONNECTION_REFUSED
• This affects multiple systems including VMs and external PCs.

Impact:

• This prevents Opera users from accessing a live ecommerce site.
• It seems Opera is using a cached permanent redirect incorrectly.

Attached screenshots show the error page, DevTools Network with 301 from disk cache, and curl outputs.

Steps already tried:

• Clearing Opera cache and site data
• Testing with a clean profile
• Multiple machines and Windows versions

Please investigate why Opera caches or applies this incorrect redirect to 127.0.0.1 and how this can be fixed.

Thank you.