@MaryJo you may finally get your Windows 10 20.04 upgrade! I had a number of machines that were blocked, and now, two days after patching for patch Tuesday they’re finally willing to try to install the upgrade.
I had problem with one machine (an Intel 6500.) It was blocked for a long time, but started to try to do the update after patch Tuesday for July. It would always fail at about 98% of the “preparing for update machine.” I think what the issue with it was that I had previously tried to download and install the video drivers direct from Intel, and tried to install them via “elevation” from my non-admin account. (On that machine I hadn’t logged into an admin account in YEARS.) In an attempt to diagnose that machines continuing problems, I did log into the Admin account, and the Intel drivers auto-launched the installer O_O. After letting that install, and rebooting, and waiting, it looks like the machine may finally successfully upgrade to 20.04.