So.. It all sarted when i one day logged on minecraft and could play multiplayer servers... i tough it was just a error that fixes it self... idk how that works but i had something like it before... but it all worked next day... but this time it was difrent. By the way... The error that happend for me trying to join the server was one from 1.7 versions but im currently playing on minecraft 1.12 or 1.9.8 so i dont know what the problem there...

The error was like for if you login to minecraft press play and try to join server it shows (internal exception:io.netty.handler.codec.Corrupted Frame Exception: length wider than 21-bit) but when you try second time (internal exception:io.netty.handler.codec.DecoderException: java.io.IOException: Bad packet id xxx (x as random nubmer)) when you logoff and login from new and join the server first time it shows again the difrent error... But it didnt fix it next dayI joined... And i knew i had to take action so i repaired Minecraft launcher.. when i ran it it opened the game but still server didnt work i did it again few times... but then i was kinda mad and i wanted to solve it faster so i deleted .minecraft folder but when i downloaded and ran the game again... it didnt make .minecraft folder as it was and gave me an error (Error: Could not find or load main class net.minecraft.client.main.Main Java HotSpot(TM) 64-Bit Server VM warning: Using incremental CMS is deprecated and will likely be removed in a future release) Now i couldnt even get in minecraft to see if the servers work... And when i went for some research i found that alot people had this problem but fixes i found didnt work for me so im asking here is there any fix for both problems as login problem first. And alot of you may be thinking that i dont have a minecraft account cause running minecraft should totaly update the .minecraft folder but i do and its name is xXTheSlayerXx So thats not the case...

P.S Forgot to say but i think im not sure i downloaded me Karspersky version that day but could it be stopping my connection to the server?

One of sites I looked for information was (http://www.minecraftforum.net/forums/support/server-support/1883376-internal-exception-io-netty-handler-codec) But they talked about that it happend on some servers for me when i tried a random server that i havent ever playd... It happend too..