WLMS

wikipedia:WLMS

Log Name:   Application
Source:       WLMS
Event ID:     100
Description: The license period for this installation of Windows has expired. The operating system will shut down every hour.  

See also

• Microsoft Windows: Windows 10, Windows Server, Windows IoT, Windows Server containers, RDP, Windows Defender, Windows Unified Write Filter (UWF), ReFS, Start-Service, Stop-Service, Set-Service, DISM, SFC, systeminfo, Microsoft Hyper-V, WSL, Windows Terminal, Windows Subsystem for Linux (WLS), Windows Server 2022, PowerShell, logoff, query user, WLMS, File explorer, Copy-Item, BitLocker, Cmdlet