Enable IE integration

New-Item -Path "HKLM:\SOFTWARE\Policies\Microsoft\Edge" -Force | Out-Null

Set-ItemProperty -Path "HKLM:\SOFTWARE\Policies\Microsoft\Edge" `

  -Name "InternetExplorerIntegrationLevel" `

  -Type DWord `

  -Value 1

Allow manual reload in IE mode

Set-ItemProperty -Path "HKLM:\SOFTWARE\Policies\Microsoft\Edge" `

  -Name "InternetExplorerIntegrationReloadInIEModeAllowed" `

  -Type DWord `

  -Value 1

gpupdate /force