I have a problem to connect to the server. When I click on server, it writes "This is an outdated version. Please install the newest client" But I already have installed newest client and all patches. Help me pls

You will have to update your client again from 1593v while your antivirus is off/disabled.

I did it but still doesn?t work.

you using a different knightonline.exe?

No, I use what I downloaded

It is because you have old .exe. We got new .exe named "Max.exe" in new patch. Your antivirus should be blocking update of it. So you get that error. It is better to turn your antivirus off while updating your client. If you can't turn it off, it is better to get rid of it completely .