Windows provides you with multiple options in addition to logging in with a password, such as a PIN, fingerprint recognition, and facial recognition (on supported systems) collectively known as Windows Hello.

However, many users have been facing the error 0x90090027 on their computer that doesn’t allow them to log in to the computer using the PIN or Windows Hello at all. Though the system can be accessed by entering your Microsoft Account password, the other faster methods stand inoperable which can quickly become an annoyance.

Fortunately, the problem is software-based and there are plenty of methods you can try to diagnose and resolve the issue on your computer.

1. Clean Boot your Computer

If you are experiencing the issue after installing a third-party service or app on your device, clean booting your PC will help you load only essential Microsoft services and disable every other app and tool on your PC.

First, press the Windows+R keys together on your keyboard to bring up the Run command utility. Then, type msconfig and hit Enter on your keyboard to bring up the system configuration window on your screen.

After that, on the System Configuration window, make sure you have selected the ‘General’ tab. Then, click on the radio button preceding the ‘Selective startup’ option. After that, click on the checkbox preceding the ‘Load system services’ option and uncheck every other option if checked.

Next, click on the ‘Services’ tab present in the window, and then click on the checkbox preceding the ‘Hide all Microsoft services’ option located in the bottom left corner of the window. Then, click on the ‘Disable all’ button to disable all but Microsoft services.

Then, click on the ‘Apply’ button to apply the changes and click on the ‘OK’ button to close the window.

Now, restart your PC from the Start Menu to load the system in a clean boot environment. After the restart, try logging in using the PIN or Windows Hello. If it works, uninstall the recently installed third-party app or service.

2. Reset your PIN

If you were not able to get your PIN working using the first method, resetting the PIN from the login screen could resolve the issue on your system.

From the login screen, click on the ‘I forgot my PIN’ option to proceed. This will bring an overlay window to your screen.

Now, enter your Microsoft Account password for authentication.

If you have 2FA (two-factor authentication) enabled on your account, re-verify the authentication.

Next, click on the ‘Continue’ button.

Then, enter the new PIN in the provided fields and click on the ‘OK’ button. You will be then signed in once the PIN reset is complete.

3. Enable Trusted Module Platform (TPM)

Windows Hello works with a TPM chip that provides encryption at the hardware level. There could be a possibility that the functionality has been disabled and that is the root cause of the issue. A recent update might be responsible for resetting the TPM and causing the mayhem. Fortunately, it’s easy to check and enable it.

First, head to the Start Menu and click on the ‘Settings’ icon.

Then, make sure you have selected the ‘System’ tab from the left sidebar.

Now, from the right section, locate and click on the ‘Recovery’ tile.

Afterward, click on the ‘Restart now’ button to proceed. This will bring a prompt to your screen.

Next, click on the ‘Restart now’ button to immediately restart your PC.

Once the PC restarts, click on the ‘Troubleshoot’ tile.

After that, click on the ‘Advanced options’ tile to continue.

Then, click on the ‘UEFI Firmware settings’ tile to proceed. Your PC will restart again.

Note: Since every manufacturer has a different user interface, the nomenclature for fields may vary. However, the overall process remains the same.

Then, after the restart, click on the ‘BIOS Setup’ option.

After that, locate and navigate to the ‘Security’ tab. Then, locate the ‘TPM/Trusted Platform Module’ option and enable the toggle or select the ‘Enabled’ option if there is a drop-down menu if it isn’t enabled.

That’s it. Click on the ‘Exit’ option to proceed. This will bring an alert to your screen.

After that, click on the ‘Save Changes and Exit’ option and then click on the ‘Yes’ option.

4. Delete Your PIN

In case resetting the PIN and enabling the TPM didn’t solve the problem for you, try deleting the PIN manually and then setting a new PIN for logging into your user account.

First, open a File Explorer window by double-clicking on the ‘This PC’ option. Alternatively, press the Windows+E keyboard shortcut to open it.

Afterward, type or copy+paste the below-mentioned address in the address bar and hit Enter to navigate to it.

Note: Replace the <username> placeholder with your account username in the address below.

C:\Windows\ServiceProfiles\LocalService\AppData\Local\Microsoft

Now, click on the ‘View’ button in the ribbon menu and hover over the ‘Show’ option. Then, click on the ‘Hidden items’ option to view the hidden files and folders.

After that, locate the ‘Ngc’ folder and double-click on it. It may bring an alert to your screen.

If the alert is displayed, click on the ‘Continue’ button to proceed.

If the permission is denied, click on the ‘security tab’ option to proceed.

On the security tab, click on the ‘Advanced’ button. This will bring an additional window to your screen.

Then, click on the ‘Change’ option.

From the additional window, click on the ‘Advanced’ option to continue.

Afterward, click on the ‘Find now’ button to populate the list of users and admins. Then, select your user account from the list and click on the ‘OK’ button.

Next, click on the ‘OK’ button.

Now, click on the ‘Apply’ button. This will bring an alert to your screen.

Click on the ‘OK’ button on the alert. Then, close all windows.

Once again, open the ‘Advanced security settings’ from the properties of the ‘Ngc’ folder. Then, click on the ‘Continue’ button.

After that, click on the ‘Enable inheritance’ option and then click on the ‘Apply’ button.

From the alert that appeared on your screen, click on the ‘Yes’ button. Then, close all windows.

After that, double-click on the ‘Ngc’ folder and you should be able to access it. Select all the contents of the folder, and delete them.

After deleting the contents, restart your PC. Then, head to the Settings of your PC and select the ‘Account’ tab from the left sidebar.

Then, click on the ‘Sign in’ options tile. If you have multiple accounts, make sure you do this under your account.

Next, click on the ‘PIN’ tile and click on the ‘Set Up’ option to begin setting up a new PIN for your system.

5. Perform a System Restore

If you have a system restore point created before you started experiencing this problem, you can simply roll back to the point to resolve the issue. It is simple, easy, and reliable.

Head to the Start Menu and type Control to perform a search. Next, from the search results, click on the ‘Control Panel’ tile to proceed.

After that, locate and click on the ‘Recovery’ tile from the grid of icons.

Next, click on the ‘Open System Restore’ option from the list. This will open a separate window on your screen.

Now, click on the ‘Next’ button to proceed.

All created system restore points will be listed on the screen. Click to select the desired one and then click on the ‘Next’ button to initiate the rolling back process.

Next, a list of drives being impacted by the rollback will be displayed. To also check the specific programs that will be affected, click on the ‘Scan for affected programs’ button. This will bring a new window to your screen.

You will then be able to view the programs that will be deleted when you roll back to a selected restore point. Click on the ‘Close’ button to exit the window and proceed with the rollback.

At last, click on the ‘Finish’ button to commence the system restore process.

6. Reset your PC

In case no method has been able to fix the issue on your PC, the last resort is to reset your PC. Thankfully, you will not lose your personal files and folders, however, resetting your PC will remove all the programs that you have installed and also bring all the settings to their default configurations.

To reset your PC, head to the Start Menu, and click on the ‘Settings’ tile present under the ‘Pinned apps’ section.

After that, from the Settings window, make sure you have selected the ‘System’ tab present on the left sidebar.

After that, from the right section of the window, scroll down to locate and click on the ‘Recovery’ tile to proceed.

Then, on the ‘Recovery’ settings screen, locate the ‘Reset this PC’ tile and click on the ‘Reset PC’ button present on the far right edge of the tile to proceed. This will open a separate window on your screen.

Now, from the separately opened window, click on the ‘Keep my files’ tile to proceed. In case you wish to remove all your personal files as well when resetting, click on the ‘Remove everything’ option.

On the next screen, you will need to choose a method for reinstalling the operating system on your machine. Since there could be an issue with the copy already present on your system, it is recommended that you click on the ‘Cloud download’ option.

Note: ‘Cloud download’ will require an active internet connection and will consume upwards of 4 GB of data.

After that, Windows will list the settings that you have chosen. In case you wish to change any of it, click on the ‘Change settings’ option to continue.

If you chose to change the settings, on the next screen, can choose to not restore the apps and settings, by clicking on the toggle switch present under the ‘Restore preinstalled apps?’ option to bring it to the ‘No’ position. You can even switch from the Cloud download to locate the install by clicking on the toggle switch present under the ‘Download Windows?’ option to change the install method. Once adjusted according to your preference, click on the ‘Confirm’ button to proceed.

After that, from the main window, click on the ‘Next’ button to continue.

In case your PC was updated recently, you will receive a message on the screen stating that you will not be able to roll back once you reset the PC. To continue, click on the ‘Next’ button.

After that, Windows will list all the impacts resetting your PC will have on your system. Read them carefully and click on the ‘Reset’ to commence the resetting process.

Error code 0x80090027 definitely creates a problem and makes the logging-in process cumbersome. Thankfully, using the above-mentioned methods will resolve the issue for you.