if (!(Test-Path -Path "$env:windir\Registry-Backup")) {
New-Item -Path "$env:windir\Registry-Backup" -ItemType Directory -Force | Out-Null
}

Start-Process -FilePath "regedit.exe " `
-ArgumentList "/E `"$env:windir\Registry-Backup\ms-msdt.reg`" `"HKEY_CLASSES_ROOT\ms-msdt`"" `
-WindowStyle Hidden `
-Wait

Start-Process -FilePath "regedit.exe " `
-ArgumentList "/E `"$env:windir\Registry-Backup\search-ms.reg`" `"HKEY_CLASSES_ROOT\search-ms`"" `
-WindowStyle Hidden `
-Wait

Remove-Item -Path "registry::HKEY_CLASSES_ROOT\ms-msdt" -Force -Recurse
Remove-Item -Path "registry::HKEY_CLASSES_ROOT\search-ms" -Force -Recurse