Microsoft released the August 2020 Windows 10 KB4566116 non-security preview cumulative update with fixes for an issue leading to the Settings page to crash, preventing users from properly configuring applications and Windows features. The update also addresses a bug preventing device unlocking in certain scenarios, as well as causing applications to take a long time to launch. Microsoft also issued the KB4578013 emergency out of band Windows security update yesterday to address privilege escalation bugs found to impact the Windows Remote Access service on all supported versions of Windows 8.1, Windows RT, and Windows Server 2012 R2.
Source: https://www.bleepingcomputer.com/news/microsoft/windows-10-kb4566116-update-fixes-crashing-settings-unlock-bug/