Routers / TP-Link
TP-Link Deco X55
Default access and factory-reset steps, cited to the manufacturer.
For regaining access to a router you own or administer. If you didn't set it up, ask whoever did.
- Username
- — app only —
- Password
- — app only —
This model has no web admin login. Manage it from the manufacturer's mobile app.
Deco is configured entirely through the Deco mobile app using a TP-Link ID — there is no web admin page and no admin/admin default. You create the Wi-Fi name and password during app setup.
Factory reset
Use a pin to press and hold the Reset button on the bottom of the Deco unit for about 1 second. The LED flashes yellow (resetting), turns solid yellow (rebooting), then pulses blue when it is back at factory defaults. Reopen the Deco app, sign in with your TP-Link ID, and run setup again to create a new Wi-Fi name and password.
Source: TP-Link Official Support — Deco Setup Guideverified · medium confidence · updated 2026-07-13