Lock Screen Slideshow in Windows 10 via Group Policy

Task: I wish to activate Lock Screen Slideshow (with images from a specific folder) for all our windows 10 users via Group Policy.

Status: I have created a GPO which copies the image folder to the local PC, and performs several Registry changes to activate the Lock Screen Slideshow with reference to the specific folder that was copied.

Problem: Even though everything looks correct in Windows 10 -> Settings -> Personalization -> Lock Screen. The lock screen is not activated...

Manual Solution: If I manually select a secondary album folder it starts working, also with the image folder that was set via the Group Policy.

My guess: My Registry sniffer, does not detect any other registry changes when i manually select the secondary album folder, so the change must be saved somewhere else in windows I guess... ?



Registry Changes:
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Windows Registry Editor Version 5.00

[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Lock Screen]
"LockAppAumId"="Microsoft.LockApp_cw5n1h2txyewy!WindowsDefaultLockScreen"
"TileMigrated"=dword:0000000b
"SlideshowEnabled"=dword:00000001
"SlideshowSourceDirectoriesSet"=dword:00000001
"SlideshowDirectoryPath1"="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"
"SlideshowEnabledOnBattery"=dword:00000001

[HKEY_CURRENT_USER\Software\Classes\Local Settings\MuiCache\3e\52C64B7E]
"@%SystemRoot%\\system32\\SearchFolder.dll,-38271"="Update Indexer Status"

[HKEY_CURRENT_USER\Control Panel\Desktop]
"DelayLockInterval"=dword:00000000

[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\ContentDeliveryManager]
"RotatingLockScreenEnabled"=dword:00000000

[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Lock Screen\Creative]
"LockImageFlags"=dword:00000000
"CreativeId"=""
"PortraitAssetPath"=""
"LandscapeAssetPath"=""
"PlacementId"=""
"ImpressionToken"=""
"HotspotImageFolderPath"=""
"CreativeJson"=""

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Authentication\LogonUI\Creative\S-1-5-21-1712795228-22320564-1955899066-4718]
"LockImageFlags"=dword:00000000
"CreativeId"=""
"PortraitAssetPath"=""
"LandscapeAssetPath"=""
Obletix .Asked:
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Shaun VermaakTechnical Specialist/DeveloperCommented:
I have seen the same thing. Even adding all the required registry changes do not call the correct APIs.

I saw this when applying a screensaver. I fixed it by doing some parts in Registry and some via ADMX
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Kevin MurphyIT ManagerCommented:
I did similar over a year ago but finally after much pain got it working.  Two things to watch out for:

1. The directory path in the registry is encrypted and if you export it, you wont get a valid path.  You have to manually copy and paste.
2. Make sure that the location you copy the pictures to is indexed.  If you copy them to the standard user docs / pics folders, then you will be ok.  But if you are copying them to another folder on the C: drive, you must include this location in the win10 index (i did this via GPO also) to get the pics to display.

Good luck.  I spent days on this problem
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