Windows 10: My YubiKeys Suddenly Started Saying This Key Doesn't Look Familiar

When I tried to sign into windows using either of my 2 YubiKeys windows displayed a message box with "This key doesn't look familiar". I was able to login with the authenticator app and deleting and recreating the passkeys allows me to login with my YubiKeys again but I am worried about why this happened.

:)

 

Windows doesn`t start. Authomatic repair doesn`t work.

Thanks again!!

I`m sorry I had not noticed that the text on the picture was in spanish. It says that windows has replaced some damaged clusters in "name" file and "directory". Then, at the end "an unspecified error occurred (75736e6a726e6c2e 4f6)".

I`ll do it and I`ll be updating this thread when I have the report.

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I ran SeaTools. These are the results:




Does it mean my HDD is useless?

 

When I register my yubo yubikey on my windows laptop don't I have to use the yubikey on my computer.

Hi, Howard_35_78

Welcome to the MicroSoft Community.



Yes, you must first register your YubiKey with your Outlook.com account, irrespective of whether you are using a local or an administrator account on your computer. Here’s how you can set it up:

1. Enable Two-Step Verification:
   
   • Log into your Outlook.com account.
     
   • Go to ‘Security Settings’ and enable ‘Two-step Verification’.
     
2. Add YubiKey as a Security Key:
   
   • In the ‘Security Basics’ page, click on ‘More Security Options’.
     
   • Under the ‘Windows Hello and Security Keys’ section, click on ‘Set up a Security key’.
     
   • Follow the prompts to add your YubiKey as a security key.
     

After these steps, you can use your YubiKey to authenticate yourself when logging into your Outlook.com account from any computer. When you insert your YubiKey into a USB port and touch the button on the YubiKey, it generates a one-time password to authenticate your login. This means that you don’t have to remember a password, making your account more secure against phishing and other attacks.

The YubiKey 5C NFC works with both local and administrator accounts and can be used to secure a wide range of online services that support FIDO U2F or FIDO2 protocols, including Microsoft accounts. Remember, it’s always recommended to have a backup login method (like a secondary email, phone number, or another security key) in case you lose your YubiKey.



If there is anything not clear or I can't understand your problem, please do not hesitate to let me know.



Best Regards

Martin | Microsoft Community Support Specialist

 

Yubikey login support

Hi,

Log in issues can be caused by invalid password or username. For us to assist you further, kindly answer the questions below:

• What troubleshooting steps have you done so far?
• Have you made any recent changes before this issue occur?
• Have you tried using Yubikey before?

We're looking forward for your response.