Dallas 1-wire Temp Sensors Problem

I have 7 extra temp sensors connected together without a hub and tied to WD. I was running without issue for a few months but now 4 of the 7 seem to be not responding to WD.

However if i use the onewireviewer.exe see’s all the sensors just fine and reads the temps out correctly. I’m kind of stumped as to where i should start troubleshooting. How can onewireviewer.exe see everything yet WD does not.