In Windows Vista and in Windows Server 2008, the recovery password for Windows BitLocker Drive Encryption is not Federal Information Processing Standards (FIPS)-compliant. Therefore, you may encounter the following issues when the System cryptography: Use FIPS compliant algorithms for encryption, hashing, and signing Group Policy setting is enabled.

Issue 1
When you manually add a recovery password at a command prompt, you receive the following error message:

The numerical password was not added. The FIPS Group Policy setting on the computer prevents recovery password creation.

Issue 2
When you try to encrypt a drive on which BitLocker recovery passwords are required, you cannot encrypt the drive as expected. Additionally, you receive the following error message:

Cannot Encrypt Disk. Policy requires a password which is not allowed with the current security policy about use of FIPS algorithms.

Issue 3
When you encrypt a drive, a recovery key is created, but no recovery password is created as a key protector.

Issue 4
A recovery password is not archived in the Active Directory directory service.