Apple TV “The WiFi password you entered is not correct. Try again (-100)” ?

Apple has been quite innovative with its devices, but recently many usrers are facing internet connectivity issue like Apple Tv is not connectin to Wifi and hotspot and says “The wifi password you entered in not correct. For example while you try again (-100)”  . Trying to connect a freshly restored Apple TV 3 (MC572LL/A) (A1378) (TVOS 6.2.1 ) to my iPhone 12 (iOS 15.2) Hotspot, but keep getting the message “The Wifi password you entered is not correct. Try again (-100)”.

While for some users while connecting Apple TV to wifi, Apple tv doesn’t even ask for password, shows error code -100.  This is annoying issue as the Apple TV won’t connect to WiFi and it won’t even let enter the password and it goes straight to error -100.

Apple TV showing error “The Wifi password you entered is not correct. Try again (-100)”, iPhone 13,12 Pro Max, XS, Plus: iOS 15 

Solution : Disable WPA3 security

Apple Tv are not ready to work with WPA3 secutrity and lots of new router are coming with this feature ON by default.        So in you router setting turn off this settings and check again.

-WPA3, also known as Wi-Fi Protected Access 3, is the third iteration of a security certification program developed by the Wi-Fi Alliance.

Example: To disable WP3 setting on eero modem

Open eero-> discover -> eero labs and then turn off wpa3. It worked for me !

Solution: Turn off IPV6 inRouter

If many new modem setting is set to default using IPV6 settings then this could be the issue why your Apple TV is not connecting to internet/WiFi. Go to Advance setting of your router and turn off IPV6 settings.

You may have to reboot all your devices , Apple Tv after this .

Solution : Update software to latest version

Since the Apple Tv password not working on Wifi and hotspot is sotware related issue in the Apple devices. Therefore to get latest updates and bug fix from Apple please keep on updating your device to latest version.