Here's a part of an article by Susan Bradley in Computerworld. For 
thosse of you still having problems, go to the update site and download 
the latest update.

"So for Windows 10 2004 or 20H2 you need to skip the updates released on 
March 9th and instead jump over to the March 18th update of KB5001649. 
It should be offered up to you as an optional update, or you can 
download it from the Catalog site. Because Windows 10 updates are 
cumulative you only need the one update (the third and final update 
Microsoft released this month)."

https://www.catalog.update.microsoft.com/Search.aspx?q=KB5001649

On 24/03/2021 7:06 pm, Günter wrote:
> Not solved yet:
>   one customer, with win10 and 10 Years running Runtime9
> Runtime9 complete new installation,
> BDE function is good,
> Runtime start with GPV
> yesterday installation of new Printer, today problem
> 
> seems that something with Printer Driver
> 
> what can be wrong with
> HCKU\\Software\\Microsoft\\Windows NT\\CurrentVersion\\Windows\\Device
> or
> HCKU\\Software\\Microsoft\\Windows NT\\CurrentVersion\\PrinterPorts
> ?
> Any Ideas?
> 
> Günter