How to Fix Microsoft Store Sign-in Error 0x801901f4 in Windows 10

Did you lately encounter the 0x801901f4 error while attempting to sign in to the Microsoft Store? Well, this trouble may arise owing to corrupted system files, damaged Windows Image, or unnecessarily stored cache. In this guide, we will present six tested methods in order to fix this issue on the computer. 

In general, removing the stored cache and resetting Microsoft Store should resolve the 0x801901f4 error. If not, try the advanced solutions such as re-register Store app or Run SFC/DISM scan. According to some users, they simply solve this problem by creating/logging with a new user account. Let’s explore these workarounds in detail –

Windows Store Login Error 0x801901f4 Solutions 

To solve the Microsoft Store login error 0x801901f4 on Windows 10 PC, try the following suggestions –

1] Remove Windows Store Cache

The presence of a huge cache inside the Windows Store may also cause similar bugs and errors on the device. If you haven’t cleared the Microsoft Store cache for a long time, removing the same should fix the 0x801901f4 issue on the computer. Here’s how to delete unnecessarily stored cache –

• Press Win + S to open the Search window.
• Type “WSReset” in the text field.
• Right-click on the top result and select Run as Administrator.

• After clearing the Store cache successfully, Reboot your PC.

When Windows reloads, check whether the issue gets resolved or not. If not, try the next workaround –

2] Reset Microsoft Store via Settings

If the error 0x801901f4 exists even after clearing the Store cache, try resetting Windows Store to its default settings. To do so, use these steps –

• Navigate to the path – Settings > Apps > Apps & Features.
• Jump to the right side and scroll down to Microsoft Store.
• Click to expand its box and hit Advanced options.

• On the next screen, hit the Reset button available under the Reset section. 

• Doing so will restore Microsoft Store to its default settings. 

3] Re-register Microsoft Store

This solution presents an alternate approach to reset the Store application using PowerShell. Re-register Microsoft Store and see if this solves the 0x801901f4 issue or not –

• Jointly press Win + X to launch the Power Menu and select Windows PowerShell (Admin).
• On the blue console, copy/paste the below cmdlet and press Enter.

PowerShell -ExecutionPolicy Unrestricted -Command “& {$manifest = (Get-AppxPackage Microsoft.WindowsStore).InstallLocation + '\\AppxManifest.xml' ; Add-AppxPackage -DisableDevelopmentMode -Register $manifest}”

• Running this code will re-register Store to its original settings.
• Close Microsoft Store and Restart Windows to make the changes effective from the next logon. 

4] Run SFC and DISM Scan

At times, system files become corrupted thus generating different bugs and errors on the computer. Windows 10 includes a great utility program to repair such files and that is none other than SFC scan. Here’s how to scan your PC using this tool –

SFC Scan

• At first, open Command prompt having Administrator rights.
• On the elevated console, run this code – sfc/scannow.
• This will take approx 15-20 minutes to find and repair corrupted system files, so wait patiently. 

• When the prompt displays successful execution, Reboot your PC.

DISM Scan

If the issue is due to a corrupted Windows Image file, follow this guideline –

• Open the Run dialog by pressing Win + R shortcut.
• Type “cmd” at the void and press Ctrl + Shift + Enter keys together.
• When the UAC window prompts, hit Yes to authorize the access.
• Now that you are inside the Command Prompt, copy/paste the below code and press Enter –

DISM.exe /Online /Cleanup-image /Restorehealth

• Similar to the system file checker, this also takes 15-20 minutes to search and repair damaged Windows Image. Once over, come out of the prompt area, and Restart your computer. 

5] Create a new User Account

Sometimes, the 0x801901f4 bug occurs mainly due to a corrupted user account. In such a scenario, all you need is to create a new user account then sign in to Windows using the newly created user account. Here’s how to create a new user account on Windows 10 –

• Go to the profile user account – 

Win + I > Accounts > Family and other users

• On the adjacent right, click the “+” icon under the “Your Family” section.

• Now, use Microsoft credentials to create a new login account on the computer. 
• Once created successfully, log off the current user account and sign-in using the newly created one.

If doing so resolves the persisting error code, the problem was in your account itself. All you require now is to provide this user-id “All Admin Rights” and delete the previous account. 

6] Use System Restore Points

If none of the above solutions work to resolve the 0x801901f4 error, use the system restore points that you have made earlier. However, do check whether the backup file is in a good state or not.

If you haven’t created any restore point previously on Windows 10, simply reset your device. Doing so you won’t lose any of your personal files and folders. Here’s how to reset Windows 10 –

• Make a right-click on the Start button and select the gear icon.
• This will take you to the Settings wizard. 
• Here, click Update & Security > Recovery.
• Switch to the right pane and hit “Get started” under the Reset this PC section. 
• Make sure to keep my files on the upcoming screen and proceed with the on-screen instructions.

That’s it, I hope you found this article helpful to fix the 0x801901f4 error on your PC. Please let us know in the comments section what was your problem and which method worked for you as this could be beneficial for other users as well.