> For the complete documentation index, see [llms.txt](https://enterprise.hideez.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://enterprise.hideez.com/use-cases/fido-security-key/unlock-pc-by-security-key.md).

# Passwordless PC Login to Entra ID (Azure AD).

Hideez Key can be used as a Security key for login in Windows 10/11.

{% hint style="info" %}
To use your Hideez Key as a Security key, there is no need to install any software on the user's PC. FIDO2 authentication is available by default.
{% endhint %}

**Unlock PC by the Security key available if such requirements are met :**

1. You are an Azure Active Directory user. ([Contact the Administrator to clarify this](/faq/hideez-key/how-to-enable-fido2-passwordless-authentication-with-microsoft-azure-ad-for-use-with-windows-10.md#add-the-user-to-the-ad)).
2. The administrator has specified for you the authentication method in Azure Active Directory - Security key. ([Contact the Administrator to clarify this](/faq/hideez-key/how-to-enable-fido2-passwordless-authentication-with-microsoft-azure-ad-for-use-with-windows-10.md#enabling-authentication-methods-and-fido2-security-keys)).
3. You have Windows 10-11 version, OS build 1840, and higher installed on your PC. How to check you can find it [here](https://support.microsoft.com/en-us/help/13443/windows-which-version-am-i-running).
4. You have completed the procedure.\
   [Pairing a Hideez Key device with Windows 10-11](/quick-start-guides/fido2-and-u2f-authentication-guide.md#pairing-a-hideez-key-device-with-windows-10).
5. Key added to  [myaccount.microsoft.com](https://mysignins.microsoft.com/security-info) :

<div><figure><img src="/files/pWDHDbli7w9JMu7J5ru1" alt=""><figcaption></figcaption></figure> <figure><img src="/files/qebCY7SDqFc706JcOccr" alt=""><figcaption></figcaption></figure> <figure><img src="/files/2WoyeRLmjz7loxu8FLWg" alt=""><figcaption></figcaption></figure> <figure><img src="/files/h4dLQrAedTZHsNLMEigc" alt=""><figcaption></figcaption></figure></div>

1. You have [created a PIN code for the Security key](/quick-start-guides/fido2-and-u2f-authentication-guide.md#creating-a-pin-code-on-a-hideez-key-device-for-fido-technology).

### **Unlock the PC with a Security key**

1. You choose the way to unlock the PC - Security key.
2. When there is a key survey, and the system asks you to take action, you click on the button.
3. You enter your PIN-code.
4. When re-survey the key, you confirm again by pressing the button.

{% embed url="<https://www.youtube.com/watch?v=LyWOlgJcroI>" %}

You can also follow this [instruction](https://support.microsoft.com/en-us/help/4463210/windows-10-sign-in-microsoft-account-windows-hello-security-key) from Microsoft.