I am using the Web Zoom SDK and using the newer version – 1.7 – users running Windows 7 cannot join. The error is invalid conference ID. I investigated and found that under Windows 7 the following error is displayed in the console:
DevTools failed to parse SourceMap: https://source.zoom.us/1.7.0/css/bootstrap.css.map
I confirmed that exactly the same code works on Windows 10 etc.
While Windows 7 is no longer supported by Microsoft, we have hundreds of customers running it and they can no longer connect to our web conference. This worked okay under 1.4.