How to delete "know this picture" on win11 desktop

Preface

How to solve the problem that the desktop cannot be deleted when the computer appears .

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1、 stay The registry Just delete it . Other methods don't seem to work ：

win+R–> regedit–>
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Desktop\NameSpace

2、win+i——> Individualization ——> background ——> Personalize the background , from Windows Focus to picture

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summary