When Xfinity rolls out a major update—or when you upgrade your modem or service—they often reconfigure how your home network is structured. Sometimes, a new modem/router combo takes over as the main router and pushes your Nighthawk router into a secondary role without telling you. https://nighthawkmesh.com/why-your-nighthawk-password-isnt-working-after-a-xfinity-update/