pidginf you are trying to launch the Pidgin 2.7.0, but the computer sends you an error like: “The program can’t start because libatk-1.0-0.dll is missing from your computer. Try reinstalling the program to fix this problem.”, in this case you have to try more solutions. The first one is to try to reinstall the program, maybe the last installation didn’t go properly. If it doesn’t work, you can try to download the LIBATK-1.0-0.DLL file and to copy it to the program directory missing the file and to reboot the computer. Usually this method works, but of course there are exceptions. If the second procedure doesn’t work as well, you may try to install the Pidgin’s offline installer.
But for the moment, try to DOWNLOAD the LIBATK-1.0-0.DLL file for free, and see if it works. Good Luck!