We are terribly sorry for the trouble that you are having with our Message+ service on your computer. We are aware of the issue and our Message+ team is working on a resolution. For the moment the messaging client for the Windows Desktop application has been removed. In the meantime, please use the following link as a guide to text from your computer: https://www.verizonwireless.com/support/knowledge-base-54302/ We appreciate your patience. 

RogerZ_VZW