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I set custom Lock Screen image in settings. It's all good but when in Sign Out through Ctrl+Alt+Del the screen is going to default, to the image displayed below. I'm the only user on my laptop and have all owner rights. How to set my picture to all causes?

If you want to do it via Registry. That's a terrible idea, registry hacking is always a last resort, since it breaks so easily. All I can say is good luck; the key you want is HKEY_CURRENT_USERSoftwareMicrosoftWindowsCurrentVersionLock Screen, but the format is completely opaque, and that's not all: The actual lock images are stored in a folder C:ProgramDataMicrosoftWindowsSystemData{SID}ReadOnlyLockScreen_B, which is normally secured for SYSTEM only.

Here are the workarounds:

Requires a ps script and regedit

I deployed via logon script (bat file)

Here is the ps script - this makes all the settings for the logged in user and changes the Lock Screen:

# Change this to the path where you keep the desired background image

$imagePath = '(Path to Image, include single quotes)'



$newImagePath = [System.IO.Path]::GetDirectoryName($imagePath) + '' + (New-Guid).Guid + [System.IO.Path]::GetExtension($imagePath)

Copy-Item $imagePath $newImagePath

[Windows.System.UserProfile.LockScreen,Windows.System.UserProfile,ContentType=WindowsRuntime] | Out-Null

Add-Type -AssemblyName System.Runtime.WindowsRuntime

$asTaskGeneric = ([System.WindowsRuntimeSystemExtensions].GetMethods() | ? { $_.Name -eq 'AsTask' -and $_.GetParameters().Count -eq 1 -and $_.GetParameters()[0].ParameterType.Name -eq 'IAsyncOperation`1' })[0]

Function Await($WinRtTask, $ResultType) {

    $asTask = $asTaskGeneric.MakeGenericMethod($ResultType)

    $netTask = $asTask.Invoke($null, @($WinRtTask))

    $netTask.Wait(-1) | Out-Null

    $netTask.Result

}

Function AwaitAction($WinRtAction) {

    $asTask = ([System.WindowsRuntimeSystemExtensions].GetMethods() | ? { $_.Name -eq 'AsTask' -and $_.GetParameters().Count -eq 1 -and !$_.IsGenericMethod })[0]

    $netTask = $asTask.Invoke($null, @($WinRtAction))

    $netTask.Wait(-1) | Out-Null

}

[Windows.Storage.StorageFile,Windows.Storage,ContentType=WindowsRuntime] | Out-Null

$image = Await ([Windows.Storage.StorageFile]::GetFileFromPathAsync($newImagePath)) ([Windows.Storage.StorageFile])

AwaitAction ([Windows.System.UserProfile.LockScreen]::SetImageFileAsync($image))

Remove-Item $newImagePath

Here is the Regedit to Change Login Screen

Windows Registry Editor Version 5.00



[HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindowsCurrentVersionAuthenticationLogonUICreativeS-1-0-0]

"RotatingLockScreenEnabled"=dword:00000000

"LockImageFlags"=dword:00000000

"LockScreenOptions"=dword:00000000

"CreativeId"=""

"PortraitAssetPath"="(Path to Image, include double quotes, remember to use \ in between folders)"

"LandscapeAssetPath"="(Path to Image, include double quotes, remember to use \ in between folders)"

Here is the logon bat file

CLS

@echo off



regedit /S (insert path to .reg file here)





IF NOT EXIST (Local Path storing image)  (

mkdir (Local Path storing image)

xcopy (From path) (Local Path storing image) /R /Y /I

) ELSE ECHO Applying Lock Screen



Powershell.exe -executionpolicy remotesigned -File  (Path to ps1 file)

Exit



EXIT