chore(e2e): Disable snap assist (#6214)

enos/modules/aws_windows_client/main.tf

@@ -231,7 +231,7 @@ resource "aws_instance" "client" {
                   New-NetFirewallRule -Name sshd -DisplayName 'OpenSSH Server (sshd)' -Enabled True -Direction Inbound -Protocol TCP -Action Allow -LocalPort 22
 
                   # Create a non-admin user to be used for RDP connection. This
-                  # is needed since the scheduled task that runs pyautogui
+                  # is needed since the scheduled task that runs desktop automation
                   # doesn't work in an Administrator context.
                   ## Create a local user
                   $Username = "${local.test_username}"
@@ -239,6 +239,16 @@ resource "aws_instance" "client" {
                   New-LocalUser $Username -Password $Password -FullName "Auto Login User" -Description "User for Auto Login"
                   Add-LocalGroupMember -Group "Administrators" -Member $Username
 
+                  # Disable windows snapping assist. This is done to reduce
+                  # complexity in RDP automated tests since the snapping assist
+                  # window introduces an additional UI element that needs to be handled.
+                  Set-ItemProperty -Path "HKLM:\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Explorer\\Advanced" -Name "SnapAssist" -Value 0 -Force
+
+                  $script = 'Set-ItemProperty -Path "HKCU:\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced" -Name "SnapAssist" -Value 0 -Force; Stop-Process -Name explorer -Force; Start-Process explorer.exe'
+                  $action = New-ScheduledTaskAction -Execute "powershell.exe" -Argument "-NonInteractive -WindowStyle Hidden -Command $script"
+                  $trigger = New-ScheduledTaskTrigger -AtLogOn -User "autologinuser"
+                  Register-ScheduledTask -TaskName "RemoveSnapAssist" -Action $action -Trigger $trigger -User "autologinuser" -RunLevel Highest -Force
+
                   # Set registry keys for auto-login
                   $regPath = "HKLM:\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\Winlogon"
                   Set-ItemProperty -Path $regPath -Name "AutoAdminLogon" -Value "1" -Type String