Wi-Fi "Authentication error occured" message connecting any wi-fi network. This happened right after Android last update on 23.09, meaning that you guys should roll back this update and never make any update for Galaxy S8 because it worked perfectly before!
Update:
Don't try to do anything or update your phone ever again. Nothing helped to fix this issue when I tried
I got this solved just after some time, like it's gone by itself but after 2 months
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