Facebook Offline Massenger - Version 1 I have seen there is problem in installation of facebook-messenger, when people do it with slow internet speednow there is no need to install messenger online. here is Alternate (offline) facebook messenger installer for window userI just create its offline setup package.this is official facebook messenger except you don't need to install it online .I just recombined messenger's files and create a full facebook messenger offline installer download and share .this facebook offline installer comes with inbuilt video call plugin.I have seen there is problem in installation of