If you can’t log into your Nighthawk router after an Xfinity update, the issue likely stems from network changes—not a wrong password. When Xfinity updates its gateway or firmware, it can override your router’s settings, shift network control, or cause conflicts between devices. This can prevent you from accessing your Nighthawk router, even if your login details are still correct. https://nighthawkmesh.com/why-your-nighthawk-password-isnt-working-after-a-xfinity-update/