I managed to find the page on Vanguard's site where I can actually download a Quicken QFX file. I also downloaded a CSV file so I can see there are transactions for time period selected.
Why am I getting an error that there are no new transactions?
I deleted all but the XIn activity from my paychecks to start fresh.
I'm running Quicken Classic Premier R54.16, Build 27.1.54.16 on Windows 10.
Thanks.