Windows 10 users are reporting that they are unable to print using devices from multiple vendors after installing updates for Windows 10 versions 1903, 1909, and 2004. KB4560960 and KB4557957, the updates causing these issues, are cumulative updates that were released on Tuesday with security fixes for multiple Windows 10 components, as well as improvements and fixes for various Windows 10 features. Users have started flooding both Microsoft Answers forums (1, 2, 3, 4) and Reddit with printing issues affecting various models of HP, Canon, Panasonic, Brother, and Ricoh devices.
Source: https://www.bleepingcomputer.com/news/microsoft/windows-10-printing-breaks-due-to-microsoft-june-2020-updates/