Windows 10: Capture a Screenshot of your Lock Screen Solved

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  1. f14tomcat's Avatar
    Posts : 37,127
    Triple boot - Win 10 Pro, Win 10 Pro Insider (2) - (and a sprinkling of VMs)
       12 Dec 2017 #11

    HippsieGypsie said: View Post
    Realizing you posted after this, but the system is locked, not signed out. Obviously no UAC protection on the lock screen.

    So therefore the primary device has total control, even over the UAC. Interesting. One could secretly install anything on the remote device without any knowledge of the owner or would the owner still have to approve the UAC before any install?

    I would say the lack of a clipboard may be a good reason for not being able to copy a screen :)

    There. I fixed it for you.

    If the clipboard is present on a locked system then why would it not be present on the sign-in screen? I mean I'm the user signed in within both modes. Could it be that the system is focused on the sign-in box, therefore can only receive that command and no other?

    If there is a way, you would be sure to find it. :)
    On a lock screen, the user is still signed in, clipboard available. At the sign-in screen, the user is not signed on yet, no clipboard.
      My ComputersSystem Spec

  2. Barman58's Avatar
    Posts : 2,788
    Windows 10 Pro x64 1803 - 17134.5 XP/Vista/Win7/Win8.1 in VM for testing
       12 Dec 2017 #12

    The virtualisation security system that is used to implement UAC is loaded and started on system start so could be used to prevent access to data in a login screen as it is when the UAC Prompt is invoked although the lack of a clipboard would be more likely to be a decider

    A locked screen is under the control of a User account, whereas there is is no user logged in, (apart from system accounts) in the case of the primary login so there will be no accessible clipboard to save to
    The Remote access route works because you are logged in to the client system with rights to copy any screens to your clipboard, The Remote access software presents you with an image of the screen on the server device, this image is generated on the local client so can be copied without triggering any security system on the server device, Think of it as like taking a phone snapshot of the Bios

    BTW as long as you have the correct access rights for remote access to a system even Microsoft's own limited RDP system will allow remote installation of software creation of folders etc what it does not provide is a way to remain linked to the remote system during a reboot. 3rd party apps allow you to access the system login screen remotely which allows you to have the remote system and the server system live at the same time. Microsoft's RDP locks the server while remote RDP access is in use

    Oh and thanks to HG for the correction

    For clarity ...
    Device remoting into is the Server - Device remoting from is the Client
      My ComputerSystem Spec

  3. Posts : 37,567
    Dual boot Windows 10 FCU Pro x 64 & current Insider 10 Pro
       12 Dec 2017 #13

    Barman58 said: View Post
    Oh and thanks to HG for the correction

    For clarity ...
    Device remoting into is the Server - Device remoting from is the Client
    You're welcome, Nigel, and thanks for the explanation and clarification of server/client terms. You explain things better than some people I notice. :)

    I get the concept of RDP and the remote access route. I knew that a system could be configured, but didn’t know a remote server had that much right to install software unless it was an Enterprise edition. Good to know.

    So, locking the screen signs a user out or suspends the account (somewhat like placing a system to sleep)? That then hands the lock screen and all else over to the system, therefore the clipboard can be used on the lock screen? As soon as a key is tapped or upon a mouse click, then the account once again “livens” (for lack of a better word) showing a sign-in screen to once again sign in since the user account is signed out or in suspension? If all or some of that be true, then the global system clipboard retains the data for the one that signs in to obtain and use?
      My ComputersSystem Spec

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