KB4598299 and KB4598301 are the latest problematic Windows 10 updates
Microsoft has acknowledged that two recent updates for Windows 10 are causing problems for users. People who have installed KB4598299 and KB4598301 are reporting BSoDs as well as app crashes.
The two updates (released Windows 10 versions 1909, 2004 and 20H2) were supposed to address issues in .NET Framework 3.5 and 4.8, but they have -- as is increasingly common with Windows updates -- introduced new problems of their own.