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Why Is My Computer Asking for a PIN Now? (Simple Fix Inside)

Is the New Windows Update Broken? Here’s the Easy Truth About Your PIN

If you use a special security key (like a USB key) to log in to websites, you might notice a small change. Microsoft released an update in September 2025 called KB5065789. This update is for computers running Windows 11 (versions 24H2 and 25H2).​

Here is the simple truth: You may now need to set up a PIN for your security key.

Before this update, you could sometimes use your key without a PIN. Now, to keep you safer, Windows might ask you to create one. This is not a bug or a mistake. It is a new safety rule to make sure it is really you using the key.​

Why Did This Change Happen?

Think of your security key like a house key. Before, having the key was enough to open the door. Now, the “lock” (the website you are visiting) wants to be extra sure. It wants to know that the person holding the key is actually the owner.

  • The Old Way: You plug in your key, and you are in.
  • The New Way: You plug in your key, and the computer asks for a PIN to confirm it is you.

Microsoft made this change to follow important global safety rules. They want to make sure your accounts are safe from people who might steal your key.​

Who Does This Affect?

This change affects you if:

  • You use Windows 11 (specifically the newer versions from late 2025).​
  • You use a FIDO2 security key (a physical key you plug in or tap).
  • You visit a website that prefers to check who you are.​

If you have already installed the updates from September 29, 2025 or later, your computer has this new feature.​

What Should You Do?

Do not worry. This is easy to handle.

  1. Follow the Prompt: If Windows asks you to create a PIN for your key, just follow the steps on your screen. It only takes a minute.
  2. Remember Your PIN: Treat this PIN like your bank card PIN. Keep it safe.
  3. Check for Updates: Make sure your computer has the latest fixes. The update also fixed some other small problems, like issues with Windows Hello (the face or fingerprint login) and some internet connection bugs.​

Advisor Tip: This change makes your computer safer. It stops a stranger from using your security key if they find it or steal it. It is a good step for your protection.