三步解决Windows10/11锁屏聚焦不更新，只显示默认壁纸的问题

启动开始菜单，输入 “cmd”，右键以管理员身份运行，依次执行下方的 3 条命令，每输入一条，按一次回车：

DEL /F /S /Q /A "%USERPROFILE%/AppData\Local\Packages\Microsoft.Windows.ContentDeliveryManager_cw5n1h2txyewy\LocalState\Assets"

DEL /F /S /Q /A "%USERPROFILE%/AppData\Local\Packages\Microsoft.Windows.ContentDeliveryManager_cw5n1h2txyewy\Settings"

PowerShell -ExecutionPolicy Unrestricted -Command "& {$manifest = (Get-AppxPackage *ContentDeliveryManager*).InstallLocation + '\AppxManifest.xml' ; Add-AppxPackage -DisableDevelopmentMode -Register $manifest}"