To remove this:

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First, run the following PowerShell with admin:

New-Item HKLM:\SOFTWARE\Policies\Microsoft\Edge -ErrorAction SilentlyContinue
New-ItemProperty HKLM:\SOFTWARE\Policies\Microsoft\Edge -Name HubsSidebarEnabled -Type DWORD -Value 0

Then open the URL: edge://policy/

edge://policy/

And click:

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Then it's clean again!

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