badrobot, I was logging in to Windows 10 using a PIN. That was very convenient. I could not see my workgroup computers. I changed from PIN to Microsoft password and up popped my workgroup computers.
OMGoodness, I'm using the PIN too! No wonder I couldn't see anything!
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Source: https://blogs.windows.com/windowsexperience/2017/01/09/announcing-windows-10-insider-preview-build-15002-pc
How to Start or Stop Receiving Insider Builds in Windows 10
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Source: Announcing Windows 10 Insider Preview Build 14271 + Mobile Build 14267.1004 | Windows Experience Blog
How to Start or Stop Receiving Insider Builds in Windows 10
Source: Releasing Windows 10 Insider Preview Build 10130 for PCs to the Slow ring
https://www.tenforums.com/tutorials/2451-preview-builds-check-new-windows-10-builds.html