Android Studio produces the following error:
The ADB binary at C:\Users\username\AppData\Local\Android\Sdk\platform-tools\adb.exe is obsolete and has serious performance problems with the Android Emulator. Please update to a newer version to get significantly faster app / file transfer
I tried to check at: SDK Manager -> SDK Tools -> Android SDK Build-Tools (link to that answer). But the last update has been installed already.
P.S. I know, such a question already exists (link to that question), but there I can't write a solution that helped me, because I don't have enough reputation points. So, I'll write here the solution, maybe it will help someone...