How to Register a security key in Microsoft account
Registering a security key in your Microsoft account adds a strong layer of protection, letting you sign in without a password using just your physical key.
A security key is a small device, like a USB drive, that proves you are who you say you are when you log into services. This process allows you to set up a FIDO2 security key, a type of hardware authenticator supported by Windows 10 and later versions.
The security key feature allows users to add hardware keys for enhanced account protection. Before registering a security key, confirm your organization's administrator has activated this security key feature. If the option to add a security key does not appear, it means the feature is not active for your Microsoft account. Your organization may also have rules about which specific security keys are permitted; check with your administrator if unsure.
Go to your Security Info page, click “Add method,” and select “Security Key.” Choose your key type, insert it or tap it to your reader, create a PIN, and then confirm to finish registration.
What is a Security Key?
A security key is a physical item, like a USB stick or fob, that adds an extra layer of security when you register a security key for your Microsoft account. Instead of just a password, you use your key and a secret PIN to log in, making it much harder for others to access your account. Common types include USB keys you plug in and NFC keys you tap.
You might see a couple of common types:
- USB Security Keys: These look like small USB drives that you plug into your computer.
- NFC Security Keys: You tap these on an NFC reader, like tapping a credit card to pay.
Your organization provides a compatible security key if using one is required. To identify the specific key type, consult the manufacturer's instructions.
Other Things You Need
Before you register a security key, make sure your computer and web browser are up-to-date and you have a compatible security key ready. Your device needs Windows 10 May 2019 Update or newer, and your browser must work with Microsoft’s system. The security key itself should support FIDO2 standards to register correctly.
- Your Device and Browser are Ready: You need to use a computer with at least the Windows 10 May 2019 Update and a supported web browser.
- You Have a Compatible Security Key: It must work with FIDO2 and Microsoft. If you have questions about compatibility, your organization’s IT help desk is the best place to ask.
- You Have Another Security Method Already Set Up: Before you can add a security key, you must have at least one other verification method set up, like your phone number or an authenticator app.
Registering Your Security Key: Step-by-Step
Ready to add your security key? Follow these steps carefully.
Head to Your Security Info Page
Open your web browser and go to the My Profile page. You will need to sign in with your work or school account if you are not already logged in.
Add a New Method
Once you are on the Security Info page, look for an option that says “Add method” or something similar. Click on that.
Choose “Security Key”
From the list of available methods, select “Security key.” This tells the system you want to add a physical security device.

Select Your Key Type
When you register your security key, you must select the security key type. Choose 'USB device' if your security key plugs into your computer. Choose 'NFC device' if your security key works wirelessly by tapping. Check your security key's packaging or ask your IT department if you are unsure of the security key type.

Prepare Your Security Key
Your security key prepares for registration once you have the security key ready. The Microsoft screen displays a button like 'Add' or 'Next,' which you click. After clicking, the Microsoft screen asks you to insert your USB security key or tap your NFC security key to a reader.
Create Your PIN
You’ll need to create a unique PIN for your security key, which you’ll use every time you sign in with it.

Confirm and Finish
Once you’ve entered your PIN, you’ll finish the setup by clicking ‘Next’ or ‘Done’ and can optionally give your security key a recognizable name.

Verify Registration
The Microsoft Security Info page now lists your newly registered security key. This display confirms that the security key registration process finished successfully for your Microsoft account.

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Summary
Registering a security key adds a strong layer of security to your Microsoft account by requiring both the physical key and your PIN to sign in.
How do you register a security key?
To register a security key, go to your Microsoft account security settings. Look for the option to add a security key and follow the on-screen steps. You'll usually insert your key and set up a PIN to link it to your account.
Where will I find my passkey?
A passkey isn't a physical item you find. It's a digital credential created during the setup of a security feature, like a security key or facial recognition. You use it with your security key or device to sign in, not find it like a lost object.
How do I connect my security key to my device?
Connect your security key by plugging it into a USB port on your computer or device. If it's a wireless key, you might need to tap it or bring it close to your device. Windows will then guide you through the setup process.
How to register FIDO2 security key?
To register a FIDO2 security key, go to your Microsoft account security page. Select 'Add security key' and follow the prompts. You'll be asked to insert your FIDO2 key and set a PIN, which links it securely to your account for sign-ins.
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About the Author
Richard
Tech Writer, IT Professional
Richard, a writer for Geek Rewind, is a tech enthusiast who loves breaking down complex IT topics into simple, easy-to-understand ideas. With years of hands-on experience in system administration and enterprise IT operations, he’s developed a knack for offering practical tips and solutions. Richard aims to make technology more accessible and actionable. He's deeply committed to the Geek Rewind community, always ready to answer questions and engage in discussions.
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