I am using a Panasonic FZ-G1 tablet with windows 10 version 1903, build 18362.175. I updated OS in June to current version and can no longer get Collector (version 126.96.36.199) to communicate with Trimble R2 reciever. Collector is seeing the reciever in the menu, but when I try to select it nothing happens. I am using the trimble gnss status app with VRS to run through collector for high accuracy and that is showing sub foot accuracy. Not sure what happened but ive tried connecting on 3 other tablets with the same and some older versioning and nothing is working. Any thoughts or answers would help for I am stumped.
Try rolling back your Windows 10 installation to the 1803 version rather than the 1903 version on one of your tablets and see you can connect to your Trimble R2 receiver. There was an issue with this, looking for the link I was reading. Here is one from GeoNet - Cannot Connect to Trimble R2 from Trimble T10 Tablet.