Spotlight Desktop
If you want to use the Lockscreen picture as your desktop background, please use the
Spotlight Desktop app.
Images are stored here:
%USERPROFILE%\AppData\Local\Packages\Microsoft.Windows.ContentDeliveryManager_cw5n1h2txyewy\LocalState\Assets
Or you can opt for the
Dynamic Theme app, which is (hopefully) better in handling remote desktop connections…
Images are stored here:
%USERPROFILE%\AppData\Local\Packages\55888ChristopheLavalle.DynamicTheme_jdggxwd41xcr0\LocalState\Bing
or
%USERPROFILE%\AppData\Local\Packages\55888ChristopheLavalle.DynamicTheme_jdggxwd41xcr0\LocalState\WinSpotlight
depending on the chosen option.