Thank you kindly.

And thank you again.  That article helped me understand how I could monitor CPU usage. I realized that, although I never reached 100%, my CPU usage was high. So, I closed excel, word, all browsers and all PDFs. And the CPU then quickly, in about a minute, downloaded the update.

Support was not able to help me.  @IntuitAlicia Perhaps you could forward this article so tech support can easily retrieve it when they encounter this lengthy download problem from other users.