# Bitlocker avec code PIN

**Modifier la group policy :**

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*Computer Configuration\\Administrative Templates\\Windows Components\\Bitlocker Drive Encryption\\Operating System Drives\\Require additional authentication at startup*

Sélectionner :

*Configure TPM Startup PIN -> Require Startup PIN with TPM*

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*Computer Configuration\\Administrative Templates\\Windows Components\\Bitlocker Drive Encryption\\Operating System Drives\\Disallow standard users from changing PIN or password*

Enabled

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Pour les tablettes activer :

*Computer Configuration\\Administrative Templates\\Windows Components\\Bitlocker Drive Encryption\\Operating System Drives\\ Enable use of Bitlocker authentication requiring preboot keyboard input on slates*

**Activer Bitlocker**

```
manage-bde -protectors -add c: -TPMAndPIN
```