Windows 10 – December 14, 2021—KB5008212 (OS Builds 19041.1415, 19042.1415, 19043.1415, and 19044.1415)
“This update contains miscellaneous security improvements to internal OS functionality. No additional issues were documented for this release.”
Windows 11 – December 14, 2021—KB5008215 (OS Build 22000.376)
“This update contains miscellaneous security improvements to internal OS functionality. No additional issues were documented for this release.“