How to fix Windows Hello PIN Error 0x801c004d

In this guide we will talk about Windows Hello PIN Error 0x801c004d. As several users have reported the above mention error when they were trying to change or reset the PIN. Well it is quite mandatory to protect our PC from unauthorized access by passwords, PIN and fingerprint. But it is actually a nerve wrecking situation when you get prompted with messages like “not recognize pin and fingerprint” or “unable to enroll a device”. If you are also on the same boat and struggling a lot to get past the issue then don’t fret! You have reached at the right place. We have shortlisted some tried and tested troubleshooting methods to resolve the above mention error. So without any further ado lets gets started with the discussion.

Table of Contents

What causes Windows Hello PIN Error 0x801c004d

  1. Pending Windows Updates
  2. Cache on Trusted Platform Module
  3. Malfunctioning CNG Key Isolation Services
  4. Not Identified PIN

How to Solve Windows Hello PIN Error 0x801c004d

Method 1: Recreate the PIN

In the very first method we suggest you to re-create the PIN. In order to reset the PIN, follow the below mention guidelines:

Step 1: Firstly hold down the Win logo and press X key

Step 2: Once the Power Menu gets prompted, tap on Settings

Step 3: Select Accounts category then Sign-in Options available at the left pane

Step 4: Then switch to the right pane and select Password

Step 5: Click on the Add button and type new password. Note: Ensure to provide a hint also

Step 6: After that follow the on-screen instructions and press Next to save the changes

Now you can use the latest PIN to sign in to your computer.

Method 2: Reset Trusted Platform Module

As per the reports, several users have managed to get past the issue by resetting Trusted Platform Module or clearing the TPM on Windows. So you can try the same for you.

Here’s how:

Step 1: On your keyboard press Win + X keys at the same time to launch Power Menu

Step 2: Now click Windows PowerShell (Admin)

Step 3: If prompted by UAC you need to press Yes to grant your permission

Step 4: After that type Clear-Tpm code just near the blinking cursor and press Enter key. This command will automatically remove the TPM on your PC.

Method 3: Check the CNG key Isolation Service Status

Well the CNG key Isolation services use the LSA process to safely secure Windows Hello key in the PC. And if the service stops accidently, it may lead to the above mention error. So all you need to do is just check its startup type and set the same to Manual by using the following instructions:

Step 1: Press Win + R keys to launch dialog box

Step 2: Now type in services.msc and tap OK button

Step 3: In the next screen, scroll down and locate CNG Key Isolation

Step 4: When found right click on it & select Properties option

Step 5: In the Startup type select Manual using drop-down menu

Step 6: Make sure it’s running status read Running otherwise check it and tap OK to save the changes

Step 7: Once done then Restart your computer and check if the issue resolved or not

Method 4: Install Pending Windows 10 Updates

As we have earlier discussed that outdated OS is a major reason for facing the above mention error. So you need to update your Windows to the latest version.

Here’s how:

Step 1: Open Local Settings by pressing Win + I keys

Step 2: Go to Update & Security option

Step 3: Now move to the right side and tap on Check for Updates

Step 4: If any updates are available then download and install it

Step 5: Finally restart your system to save the changes

Method 5: Create New User Account

If none of the above mentioned methods works for you then we suggest you to create a new Admin Account then try to set the PIN.

Here’s how:

Step 1: First of all right-click on Windows icon and select Settings option

Step 2: Tap Accounts after that Family & Other Users option

Step 3: Then move to the right side and press Add Someone else for this PC (under other users)

Step 4: When Microsoft Account Page gets prompted then enter valid Email ID and press the Next Button

Step 5: Finally click Finish to confirm the changes

Method 6: Go for PC Repair Tool

Here in this section we strongly recommend you a PC Repair tool if you often get stuck with several PC issues. Though all the above mentioned methods are effective but sometimes your PC needs an expert. And this is an expert tool which will not only resolve Windows Hello PIN Error 0x801c004d error but will also fix other minor and major issues of the PC in a single go.

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That’s all. We assume that our guide was helpful for you. Thanks a lot for Reading. Good Luck with the fixes.

Samir Prakash Author