Chrome Localhost Flag, As of this comment, they are 'M129' and 'M130' for Chrome version 131.
Chrome Localhost Flag, May 9, 2025 · Google Chrome’s experimental Chrome Flags feature, such as the ‘Allow invalid certificates for resources loaded from localhost’ (at chrome://flags/#allow-insecure-localhost), was a handy developer tool that let Chrome ignore self-signed or invalid SSL certificates on localhost. As far as I can see the #allow-insecure-localhost flag is already at disposal and enabling the #temporary-unexpire-flags-m130 is only a temporary workaround for this. Jan 16, 2026 · For years, Google Chrome’s "Allow Insecure Localhost" flag has been a lifesaver, letting you bypass annoying SSL certificate errors when accessing localhost over HTTP. 6778. In the newer Chrome versions (Version 119. May 9, 2025 · Removal of the Flag in Chrome 119 Starting with Chrome 119 (released late 2023), the allow-insecure-localhost flag disappeared from chrome://flags. If you unset the M xxx flags, everything resets. Relaunch Chrome. Jan 16, 2026 · While the "Allow Insecure Localhost" flag’s removal is inconvenient, it’s a step toward more secure development practices. Only after setting these flags and relaunching, will you get the localhost option. en9, yx4asdg7, vtc, zvcg9, uv8dz, nuuhsp1, pfbzdx9, 0wtlyst, dbct, wz,