March 9, 2021—KB5000848 (Monthly Rollup) is applied to Windows 8.1 and Windows Server 2012 R2, if your server OS is Windows Server 2008 R2, this KB cannot be installed.
Windows Server 2008 R2 Standard is end of support on 1/14/2020.
-------------------------------------------------------------------------------------
If the Answer is helpful, please click "Accept Answer" and upvote it.
Information posted in the given link is hosted by a third party. Microsoft does not guarantee the accuracy and effectiveness of information.
Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.