Wi-Fi Password Not Working: How to Fix Incorrect Password Error

Step 1: Log into router admin and check the actual saved password

The definitive source of the correct password is the router itself. Open a browser and navigate to 192.168.1.1 or 192.168.0.1. Log in with your router admin credentials and go to Wireless or Wi-Fi settings. The password field may show dots — look for a show password option. Copy the exact password character by character.

Step 2: Forget the network on the device and reconnect fresh

Devices store Wi-Fi credentials and may be presenting a cached wrong password silently. On Windows: Settings > Network & Internet > Wi-Fi > Manage known networks > select your network > Forget. On iPhone: Settings > Wi-Fi > tap (i) > Forget This Network. Then reconnect and type the password fresh.

Step 3: Check CAPS LOCK and easily confused characters

Wi-Fi passwords are case-sensitive. Check that CAPS LOCK is off. Look carefully for characters that are easy to confuse: 0 (zero) vs O (letter O), 1 (one) vs l (lowercase L) vs I (capital i), and rn vs m. If the password was written by hand or set on a phone, these substitutions are a common source of errors.

Step 4: Reboot the router

A router that has been running for weeks can develop memory issues that cause it to reject valid authentication attempts while displaying a wrong-password error. Unplug the router for 30 seconds, plug it back in, wait two minutes for it to fully boot, and try the password again.

Step 5: Temporarily change the password to something simple

Log into the router admin and change the Wi-Fi password to a short, all-lowercase string with no special characters — for example, testpass1. Try connecting with this simple password. If it works, the original password contained a character the device was misinterpreting. Change the password to something clear and well-typed.

Step 6: Check if MAC address filtering is enabled

MAC filtering allows only specific devices to connect and silently rejects all others — the device sees this as a password failure. In router admin, go to Wireless > MAC Filter or Access Control. If filtering is enabled, either disable it or add the device's MAC address to the allowed list.

Step 7: Check for band-specific passwords

Some routers allow separate passwords for 2.4 GHz and 5 GHz networks. If the router broadcasts both under the same SSID but with different passwords, you may be entering the 5 GHz password while connecting to 2.4 GHz or vice versa. Check both band passwords in router admin and try each one.

Frequently Asked Questions

Why does my correct Wi-Fi password not work?

The most common causes are a cached wrong password on the device, a character confusion in the password (0 vs O, 1 vs l), or MAC address filtering silently blocking the device. Forget the network on your device, log into your router admin at 192.168.1.1 to see the exact saved password, and reconnect typing the password carefully. If the error persists, check the router's MAC filter settings.

How do I find my Wi-Fi password?

The most reliable method is logging into your router admin page at 192.168.1.1 or 192.168.0.1 and looking in the Wireless settings section. On Windows, you can also find a saved password for networks you've previously connected to: Settings > Network & Internet > Wi-Fi > your network > Show password (requires admin rights). On Mac: Keychain Access > search for your network name > double-click > Show Password.

Can MAC address filtering block devices?

Yes. When MAC address filtering is enabled on a router, any device whose MAC address is not on the approved list will be rejected. The device typically sees this as an incorrect password error or simply fails to connect after entering the right password. To check, log into router admin and look for Wireless > MAC Filter, Access Control, or Client Filter. If filtering is on, add your device's MAC address or disable the feature.