The simplest and most effective solution to fix Wifi error on Google Pixel phone is to turn off Wifi then proceed to reopen Wifi again.
If the Wifi error persists, you can switch to open flight mode , then wait about 30 minutes then turn off the airplane mode and check for errors.
The next solution to fix Wifi error on Google Pixel is to restart the device and wait until the Wifi connection is established . Then check whether Wifi is working or not.
It is possible when you enable the Power Saving feature and you forget to remove the Wifi restrictions , and this is the reason why Wifi will not work.
Access Settings, then click Battery => Power Saving Mode . Find and change the Data restrictions status to OFF (if the initial state is ON).
Finally check if Wifi error is still there.
Some users reflect that after they forget to connect to Wifi, then reconnecting to Wifi also fix Wifi error on Google Pixel phone.
Note : In this way you need to remember the Wifi connection password.
First access the Settings Menu on your Pixel phone, then click to select Wifi . Now you will see the Wifi name you are trying to connect to. Click and hold the Wi-Fi network name on that connection, then select Forget network (forget the network).
Next turn off Wifi and wait about 5 seconds, then proceed to reopen Wifi. Click the Wifi name you want to connect, then enter the password to connect and check if the error is still there.
Google Pixel is integrated Wifi Timer to support turning off Wifi after a certain period of time. To check whether Wifi Timer on your phone is enabled or disabled, access the Settings Menu => Open Wifi . Next, select the Menu key (i-shaped icon) => Advanced . Find Wifi Timer and switch the status to OFF if the initial state of the option is ON.
Wrong date and time settings can cause the Wifi connection error on Google Pixel phones. So to fix the error you try to check if the date and time settings on your Pixel phone are correct.
If the date and time setting is wrong, proceed to reset correctly and try connecting again to see if the error still occurs.
Good luck!