Windows 10: Kicked to lock screen. Device is offline. Credentials could not be verified.

ArramisCastellon · Oct 15, 2020

Hello Microsoft support.

Today I was using my laptop when I was suddenly kicked to my lock screen and my computer seemed to restart itself. I tried logging back in with my PIN # but it said my credentials could not be verified. It would not let me change my pin. I tried logging in with my password. It said it was incorrect even after changing it on a separate device because I couldn’t do it from my lock screen.

I made sure everything was the same when entered and I know my account information but I don’t know what to do now. I believe my account may have been corrupted. Please help.

:)

Brink · Oct 15, 2020

Credential Guard lab companion

If you have heard about Credential Guard in Windows Server 2016 (and in Windows 10), but do not have an environment to try it out, here is a lab environment we built for you to play.

Lab access

The link will lead you to a sign up page, after that, you will see the following labs listed for Windows Server 2016:

Windows Server 2016 labs

There are 3 exercises in the “Implementing Breach Resistance Security in Windows Server 2016”:

Credential Guard

Remote Credential Guard

Device Guard

This blogpost will walk you through the Credential Guard lab details.

After click on the link of Breach Resistance lab, you be required to sign in and then you can launch the lab:

Sign-in

Launch page

It takes a few minutes to create the VMs, and once it has done, you will see the following machines prepared:

Initialize

DC: domain controller, which is not used for this exercise.

SRV01 and SRV02: both are Windows Server 2016, and used for the lab exercise.

Lab exercise – Explained

The steps are listed in the Content section:

Content

This lab is structured to cover the following in sequence:

Understand how attackers can use the hash in memory to gain access to domain controllers

Configure Credential Guard

Verify the hash in memory is protected using Credential Guard

You can follow the steps listed under the content section to complete the lab, the intent of the blog, is to break the procedures into groups, to help you understand the exercise better.

Prep the hash

Lsass.exe is the process which handles user logon, it stores the user credential information in its memory. The memory is cleared when the machine starts up. In this lab environment, all the virtual machines start at the time lab launches, when you logon to the machine, you will only have the logon user credential information in memory. In order to demonstrate an attacker gaining user access using other account’s hash, the first part of the lab is to simulate a server which has been running for a while, different users had remotely or locally connected to it, therefore, lsass memory stored many different user credential information.
This is accomplished by step 1-8.

Retrieving credential hash

Mimikatz is a popular tool for retrieving lsass memory information. The tool has been copied to the lab machines, step 9-13 walk you through the process of dumping lsass memory using Mimikatz.

Pass the Hash

Pass the hash is a hacking technique that allows an attacker to authenticate by using the underlying NTLM, instead of specifying the user password. In step 14 to 24, you will extract LabAdmin hash from lsass using Mimikatz, and use the hash to open a PowerShell console, and perform a couple of operations using the LabAdmin privilege:

Add a user to the domain admin group

Open remote PowerShell connection to a domain controller

Both operations could not be performed by the logon user. But using the hash of the LabAdmin, an attacker will be able to do it using the information retrieve from Lsass memory.

Configure and verify Credential Guard

Step 25 to 36 illustrate the steps to configure credential guard, then verify its status using msinfo32.exe and PowerShell.

Step 37 to 43 goes further to use Mimikatz to show the hash in Lsass is now encrypted using Credential Guard.

More info

The exercise illustrated the benefit of Credential Guard in Windows Server 2016 as well as Windows 10. For more information, you can find here.
Click to expand...

Source: Credential Guard lab companion Datacenter and Private Cloud Security Blog

See also:

Enable or Disable Credential Guard in Windows 10 Windows 10 Security System Tutorials

Verify if Credential Guard is Enabled or Disabled in Windows 10 Windows 10 Security System Tutorials

Ramesh.Kumar · Oct 15, 2020

Getting kicked offline, resolved...BUT

Hi Kenny,

Thank you for posting your query on Microsoft Community.

I can imagine the inconvenience you are experiencing and will certainly help you in the right direction to fix the issue. However, I would appreciate if you could answer a few questions to narrow down the issue in order to provide
you with better assistance.

When you say kicked offline, do you mean looses internet connection or signed out from that website?

If it is specific to some website, have you check other browser? Was the result same?

Are you using wired or wireless internet connection?

If you are referring to internet connection which losses and you need to sign in again and again then try the steps mentioned below and see if it helps.

Method 1

If you are using wireless connection, click on wireless icon.

Search for the network through which you are connected.

Below that network name you will get a check box stating Connect automatically.

Check that box and hope you will get connected automatically to that network as soon as your computer come in its range.

For reference you may refer to the screen shot added below.

Method 2

If issue still persists try to refer the steps provided in the article mentioned below and see if it helps you to fix the issue.

Fix network connection issues

Hope this would help. If issue still persists post back with current status of your computer and result of proposed suggestion, we will be happy to assist you.

Regards,

IDLF · Oct 15, 2020

Your credentials could not be verified

Hi! could you please help.

My Surface is not recognizing my PIN, it show "Your credentials could not be verified"??? I logged in with the password, went to settings trying to verify the PIN, fingerprint and face recognition but is not working, every time the lock screen comes in
I have to use the password. Already try allowing the windows apps use, did not worked either. What can I do?

Thanks!

Windows 10: Kicked to lock screen. Device is offline. Credentials could not be verified.

Kicked to lock screen. Device is offline. Credentials could not be verified.

Kicked to lock screen. Device is offline. Credentials could not be verified.

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