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IT administrator. How do I temporarily revert the new security dialog?

If the update causes temporary disruptions in your environment, you can revert to the previous dialog behavior by setting a registry value.

  1. Select Start, type Registry Editor, and then open it.
  2. Go to and modify the key: HKLM\Software\Policies\Microsoft\Windows NT\Terminal Services\Client with the following values:
    • Name: RedirectionWarningDialogVersion
    • Type: REG_DWORD
    • Data: 1
PowerShell
Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows NT\Terminal Services\Client]
"RedirectionWarningDialogVersion"=dword:00000001
PowerShell
$path = "HKLM:\Software\Policies\Microsoft\Windows NT\Terminal Services\Client"
if (!(Test-Path $path)) { New-Item -Path $path -Force | Out-Null }
New-ItemProperty -Path $path -Name "RedirectionWarningDialogVersion" -PropertyType DWord -Value 1 -Force | Out-Null