Windows 10 seems to be having problems with the February - January 2021 updates, with many users reporting that desktop applications are not working or even blue screen loops.
Specifically, application errors occur to those who have installed updates KB4598299 and KB4598301, which are for 20H2, 2004, or 1909. These updates have recently been released with the following enhancements to .NET Framework 3.5 and 4.8:
- Fixes a scrolling problem when DPI scaling is not 100% and the user scrolls to the end of TreeView.
- Fixes an issue where ASP.Net applications fail during pre-compilation.
- Includes reliability improvements for automatic native image creation tasks.
.NET Framework updates are installed automatically when you check for updates in Windows Update and are usually aimed at developers.
The error also occurs in Visual Studio, Windows Presentation Foundation (WPF), and other products. In the Feedback Hub, a user stated that he can not use Visual Studio 2019 after applying KB4598299.
In a community forum, Microsoft confirmed that the problem is with update KB4598301 and that the company is "working to release an update".
In addition to a new .NET Framework update, Microsoft is also preparing new Visual Studio bug fixes.
Because the Windows Presentation Foundation (WPF) is also affected, other applications may be affected by the update.
How to troubleshoot issues after updates KB4598299 or KB4598301?
Easy! Remove updates KB4598299, KB4598301. To uninstall the update, open Control Panel - Uninstall a program - View installed updates. On the next screen, look for the KB number and click the uninstall button.
Otherwise, you will have to wait for the next update, which is expected to be released in the second week of February.