So my system ask me if I want to install the QB update..when I do, I can no longer open QuickBooks. It opens and closes immediately. Ran QBToolHub..no avail. Agent recommended repair from Windows Programs & Feature...nope. R&R and It comes up asking for registration - 30 day temp. I register, install update and it does it again...fails to STAY OPEN. I see it flash as if it wants to open but it closes immediately. So ever time I perform the INSTALL UPDATE, it does the same thing...2021 Enterprise version