I’m experiencing the same issue. This is not a deployment 404 or a domain configuration problem. All my deployments and custom domains are live and serving traffic correctly.
The issue is with the Vercel dashboard UI. When I go to any project’s Settings > Domains page (for example, vercel.com/[team]/[project]/settings/domains), I get a 404. The 404 page shows the public marketing navigation (Products, Resources, Solutions) instead of the dashboard sidebar. This suggests the dashboard’s client-side routing is failing to resolve these settings routes.
What I’ve confirmed:
I’m logged into the correct account (single user, no team members).
I’ve tested across multiple browsers and in incognito mode.
I’ve cleared cache and cookies, so it’s not a local issue.
The team overview and project overview pages load correctly in the dashboard UI.
All custom domains resolve and serve production deployments without issue.
The system bot auto-reply links to deployment 404 debugging, but that is not relevant. The problem is with the dashboard, not deployed sites