We're having a problem on many of our Dell Latitudes where the MNE5.0.x agent will not kick off Bitlocker Encryption due to the error "Failed to apply any of the authentication methods specified in the policy".
Policy is set to use TPM Authentication.
If we remove MNE5.x from an affected system & then install MNE4.x, with the same policy applied bitlocker encryption starts immediately.
Interestingly, once a device has been encrypted using tghe MNE4.x agent, we can upgrade to 5.x, decrypt, and it will re-encrypt still with MNE5.x.
Had a support case open previously with this, but didn't get anywhere with it.