After exhaustive efforts with level 1, level 2 and level 3 support.  My issue remained unresolved.  Unable to update my intuit products.

Level 3 (Tony) determined that it was possibly machine specific and kind of gave up and told me to let him know if I resolved the issue.  Working with Tony, it occurred to me to try to download from a second system and the second system experienced the same error; unable to download the 2020 updates.

Solved!

The issue is not machine specific but internet provider specific.  It seems that Xfinity is “Protecting” me too much and is not allowing connections to any FTP sites.  I went into the modem settings and turned off firewall protection at the hardware level, turned off account specific settings of “Safe Browsing” and turned off Norton at the system level.

Still unable to download from FTP sites, such as the Intuit updater.

It then occurred to me to try another site but before that, I realized that I didn’t have to do that because I had access to my personal hotspot thru AT&T.  Turned off access to Xfinity modem and enabled Wi-Fi to my personal hotspot and Bingo!

Problem resolved, I was able to update my intuit products and download from FTP.

The suggestion has been made to return the modem and get another modem from Xfinity.  Trying this week.  Meanwhile, I have a workaround for my situation but wanted to let you know about this, in case you get other users with similar problems.