Minecraft fatal error 4

hi , i'm new to minecraft and haven't played yet , every time i try to play multiplayer it says fatal error 4 (for like the 50 times) , i've tried updating my java , i looked for the same problem on this site but none of the solutions worked for me , can anyone help ?

Can you please post a screenshot regarding to the error?

Another question:
Did you use any mods?

btw i didn't use anything , i'm playin the browser minecraft