fritz.box won't open: what to do

What the message looks like

Im Browser erscheint bei fritz.box „Die Seite ist nicht erreichbar“ oder „Server nicht gefunden“.

Common causes

• The device is not connected to the box at all (other Wi-Fi, mobile data, guest network).
• A VPN or a custom DNS server prevents the name fritz.box from resolving.
• The box uses an address other than 192.168.178.1, for example after a change or with another router.
• Browser cache, a proxy or extensions block the page.
• The box is stuck and needs a restart.

Check

1. Does the box answer?
   ping 192.168.178.1Copy
2. Which address does your router have (Windows, Default Gateway)?
   ipconfig /allCopy
3. Is the name fritz.box resolved?
   nslookup fritz.boxCopy
4. Router address on macOS/Linux
   ip route show defaultCopy

Fix

• Make sure your device is on the right Wi-Fi or plugged in by cable to the box, and that no VPN is running.
• Open http://192.168.178.1 directly instead of fritz.box. If that works, the problem is name resolution.
• If ipconfig /all shows a different default gateway, type that address in the browser.
• Try a private browser window or another browser.
• Restart the box by unplugging the power briefly, plug it in again and wait a few minutes.

FAQ

Why does 192.168.178.1 work but fritz.box does not?

Your device reaches the box but cannot resolve the name. Usually a foreign DNS server or a VPN is the reason.

Can I open fritz.box when away from home?

No, the name only works inside the home network. From outside you need a remote access that was set up and secured beforehand.