Norton no longer listed as a Top Product in latest Win 10 test, and throwing out quite a few False Positives. 
https://www.av-test.org/en/antivirus/home-windows/
It shows 6 FP with 1.2 million samples. Industry average is 5 FP.
Norton released a patch today for FP on Windows Store Apps.
Protection was still at 100%.
No need to panic.
Jim 