How do I find the version or Build of Content Viewer I am running. How do I determine this?

Release: 14.0
Component: WBVMTC
DVWEB

The easiest way to retrieve this information is from the product about box. (Left Menu > (i) Information > About - MTC Content Viewer 

Support will need (at least) the two lines that look something like this: 

Version 14.0.1-SNAPSHOT 
Build #4adf91b2 2019-02-11 10:51:40