Quicken 2019 Upgrade hangs up with One Step Update

I just bought and downloaded the 2019 Quicken Premier Upgrade for Windows (USA).  My last upgrade was 2016.  After upgrade, Quicken hangs up when I use One Step Update even for investment quotes only.  Other functions seem normal, but have to use CTRL-ALT-DEL to get out of hung position.  Tried to re-download from My Account, but fails at halfway.  Not sure what to try next.  Can you help, please? Thx
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