https://wccftech.com/out-of-band-windows-10-update-kb5004760-is-out/

Windows 11 may be the news of the month, but Microsoft is making sure to stay ahead of the Windows 10 problems. The company has released an out-of-band update for Windows 10 to address an issue in which IE11 and apps using the WebBrowser control were failing to open PDFs.

KB5004760 (Builds 19041.1082, 19042.1082, and 19043.1082) is available for Windows 10 versions 2004, 20H2, and the latest version 21H1.