I've had the same issue since 11/2019 To date I have removed any lingering anti virus software and disabled my current anti virus (ESET) but still am unable to get the updates. This is a problem since I'm working from home now I've had multiple conversations with Intuit and other IT professionals and no one can seem to fix this issue. I have this problem on 2017, 2018, 2019 and 2020
