Open Settings → Network & internet → Wi-Fi → Manage known networks, choose the network, click Forget, then reconnect.
Step by Step
- Determine whether the problem affects one device or every device on the network.
- Open Settings → Network & internet → Wi-Fi → Manage known networks, choose the network, click Forget, then reconnect.
- Change one setting or component at a time and test again.
- Record existing router/network settings before changing passwords, DNS, addressing, or advanced configuration.
If That Doesn't Work
- Router menus, indicator lights, and terminology vary by manufacturer and internet provider.
- Avoid factory-resetting a modem/router unless you know how it is provisioned and have the information needed to restore the connection.