Tell if encription key was set on stolen laptop

Hi!

Since you don't have access to the laptop and its Recovery ID, you need to find out which account the device was linked to first, and then check if there are any keys created in that account.

Go to https://account.microsoft.com/devices > Sign in with an ACCOUNT > See if your laptop appears in the list.

• You must log in with all your email addresses to verify that the laptop appears on the list.
• If the laptop appears on more than one account, consider the most recent one.
• You can also log in with @gmail.com accounts.
• You can block your device linked to the account through this website.

https://support.microsoft.com/en-us/account-billing/find-and-lock-a-lost-windows-device-890bf25e-b8ba-d3fe-8253-e98a12f26316

After finding the device in your account, see the article below for instructions on how to find your recovery key:
https://support.microsoft.com/en-us/windows/find-your-bitlocker-recovery-key-6b71ad27-0b89-ea08-f143-056f5ab347d6

• If you find a Recovery Key, it's probably for your laptop.
• There's no way to be sure if you have two or more computers linked to the same account.

If the laptop is already stolen, the only way to know whether BitLocker (encryption) was enabled is to check records or services that were configured before it was lost.

For personal/home use, check these:

1. Microsoft account device list
   If BitLocker was turned on and the recovery key was backed up to a Microsoft account, that confirms the drive was encrypted.
   • From another device, sign in and look for recovery keys as described here: Find your BitLocker recovery key.
   • If a recovery key exists for that stolen device, BitLocker encryption was on.
2. Work/school or IT-managed environment (MBAM/enterprise)
   If the device was managed by an organization using MBAM (Microsoft BitLocker Administration and Monitoring) or similar:
   • An admin with the MBAM Report Users role can open the Administration and Monitoring Website, go to Reports → Computer Compliance Report, filter by that computer, and see the last known BitLocker encryption state of its volumes.

If no recovery key is found in any of the documented locations and there is no enterprise reporting (like MBAM) for that device, there is no supported way to retroactively confirm from Microsoft services whether encryption was enabled on a stolen, offline laptop.

References:

• How to determine BitLocker encryption state of lost computers
• BitLocker overview
• Find your BitLocker recovery key
• Need help securing stolen laptop data. - Microsoft Q&A