Windows – Can’t find specific Windows 10 Spotlight Lock-Screen Image

I've been able to accomplish this by opening a folder here:

C:\ProgramData\Microsoft\Windows\SystemData\<SID>\ReadOnly\LockScreen_A

In this path, the <SID> is the security identifier for the user in question. This could be found by executing the following in a Command Prompt assuming this user is currently logged on:

whoami /user

In the end, the path would look something like:

C:\ProgramData\Microsoft\Windows\SystemData\S-1-5-55-555555555-555555555-5555555555-555555\ReadOnly\LockScreen_A

Also note that the LockScreen_A could be LockScreen_B (or alphanumerically incremented) if this is not the first lock screen background.

Though I work for Microsoft, I'm posting this as a user and not as an official endorsement of this method.

Once tips are enabled as described in the answer by charlierb, it may happen that they are not shown nonetheless.

A possible reason is that they are disabled by a User Accounts setting.

• At a command prompt, type Control Userpasswords2
• In the User Accounts form, go to the Advanced tab
• Clear the Require users to press Ctrl+Alt+Delete option and click OK

Now check if tips are shown, by typing WINDOWS+L to go to the Lock Screen.