When i click on AVD Manager, i am getting an error as in the screenshot below.
Referred to the following links. But none of the solution works for me.
Failed
My situation: Right after installing Android support into Visual Studio, the "Open Android Emulator Manager (AVD)" button was broken and running C:\Program Files (x86)\Android\android-sdk\tools\lib\AVD Manager.exe produces the error shown by the OP. The screenshot in yean's answer shows an android-sdk folder that contains AVD Manager.exe, but my android-sdk folder did not contain any files (only folders).
Crazy as it sounds, simply copying AVD Manager.exe from android-sdk\tools\lib to android-sdk fixes both problems. (I couldn't create an API-18 arm emulator but API-19 worked.)