You are downloading the Viber XAP file v220.127.116.11 for Windows Phone. Viber is a free and useful Social app: Viber is a messenger that is as fast & easy as texting – only for FREE!Viber messenger uses your phone’s internet connection (whether ... You can now download the offline XAP file to install & try it.
Download Locations for Viber 18.104.22.168 XAP file
Important Notice: Now Due To Unspecified Limitations, You Can Not Use The Offline XAP File To Install It Any More.
To try to install it manually from an SD card, you should choose one of the server location above to get the offline Viber XAP file, move the file to your phone's SD card and then tap 'Install local apps' in the phone's App list.