
HTTPS-Only mode forces the browser to automatically upgrade every request to HTTPS. If the upgrade fails (or if you explicitly hardcode http:// ), the browser throws an error instead of falling back to unsafe HTTP.
Understanding and Fixing "Navigation failed because the request was for an http url with https-only enabled"
The error message is actually very literal. Your browser attempted to fetch a resource (an image, a script, an API endpoint, or a page navigation) using the standard http:// protocol. However, the browser’s internal is active, and it is refusing to downgrade to unencrypted HTTP.
Because the browser only sees your HTTPS endpoint, the HTTPS-Only mode is satisfied.
The golden rule of 2026 is simple: APIs, images, iframes, and fonts.
HTTPS-Only mode forces the browser to automatically upgrade every request to HTTPS. If the upgrade fails (or if you explicitly hardcode http:// ), the browser throws an error instead of falling back to unsafe HTTP.
Understanding and Fixing "Navigation failed because the request was for an http url with https-only enabled"
The error message is actually very literal. Your browser attempted to fetch a resource (an image, a script, an API endpoint, or a page navigation) using the standard http:// protocol. However, the browser’s internal is active, and it is refusing to downgrade to unencrypted HTTP.
Because the browser only sees your HTTPS endpoint, the HTTPS-Only mode is satisfied.
The golden rule of 2026 is simple: APIs, images, iframes, and fonts.