If you are using Windows 10 version 2004 or newer, Microsoft released an emergency update (KB5004945) to address a Windows Zero-day vulnerability. This vulnerability is called as "PrintNightmare" and is being exploited by attackers to achieve local privileges and remote code execution through the Windows Print Spooler service.
All users running Windows 10 version 2004 (May 2020 Update), Windows 10 version 20H2, and Windows 10 version 21H1 must update their systems with this KB5004945 update by running Windows Update from the Settings app.