Write down the first eight digits of the recovery key ID shown on the BitLocker screen, then use another device to locate the matching 48-digit key while avoiding further repeated SMS requests.
1. Try another verification method for the Microsoft account
Since SMS delivery has already failed, do not keep requesting new codes; repeated requests can trigger or extend a temporary block.
- Select Try another verification method and use an alternate email or another method already connected to the account.
- If no alternative appears, select I don’t have any of these and follow the account-recovery prompts.
- If requests may have caused a temporary block, stop attempting sign-ins for at least 24 hours. Microsoft notes that some blocks can last longer, potentially up to one week.
- Also check whether the phone blocks unknown senders, its message storage is full, or the number is VoIP. Microsoft does not support VoIP numbers for verification codes. Support agents cannot manually send a code or change the account’s security details.^1^
2. Match the recovery key—not merely the device name
After obtaining access to the account:
- Open the personal Microsoft account recovery-key page from another phone or computer:
https://account.microsoft.com/devices/recoverykey - Compare the first eight digits of the key ID on the locked ASUS with the IDs listed online.
- Enter the corresponding 48-digit recovery key on the laptop.
Check every Microsoft account ever used on the laptop, particularly the account used during its initial setup. The key can exist even if the laptop does not appear in that account’s device list. If somebody else—such as a family member, seller, or technician—set up Windows or enabled BitLocker, the key may be in that person’s account. Windows 11 version 24H2 may display a hint identifying the associated account on the recovery screen.^2^
Also check for:
- A printed copy among the laptop’s paperwork.
- A USB drive on which the key may have been saved.
- A text file or other backup created when encryption was enabled.
3. If the laptop was connected to work or school
From another device, sign in at:
Then select Devices, expand the ASUS device, choose View BitLocker Keys, and match the displayed key ID. If the key is not visible, contact the organization’s IT administrator; a managed device’s key may be held by the organization.^2^
If no recovery key can be found
There is no supported bypass for BitLocker, and Microsoft Support cannot retrieve, provide, or recreate a lost key. Without it, the encrypted files cannot be accessed.^2^
The remaining supported option is to reset or clean-install Windows. This erases the encrypted drive and all files stored on it, so first check from another device whether essential work was synchronized to OneDrive or another backup. Microsoft’s recovery guidance confirms that resetting without the key removes all files.^3^
Do not pay anyone claiming they can bypass BitLocker or generate the key; possession of the matching recovery key is required.
References