Hi One of my Windows 7 computer with Bitlocker / MBAM are getting following message in Event Viewer \ MBAM \ Admin and it repeats like that evry hour. I have searched on internet without any luck, Could any assist me? An error occured while applying MBAM policies. Volume ID:\\?\Volume{c6c03559-9df1-19e1-b9e5-78e7d1af2e96}\ Error code: 0x80310066 Details: Group policy does not permit the use of TPM-only at startup. Please choose a different BitLocker startup option.

Hi, Its seems that you didnt enable TPM startup setting in Group policy. As this reason, you should do like this: StartIn search bar type gpedit.mscComputer configuration Administrative Templates All settings in the right panel find the setting named Require additional authentication at startupdouble click itenablein the options window, you can check like this Allow TPM,etc. More information refers following link: http://social.technet.microsoft.com/Forums/en/w7itprosecurity/thread/c3b5e90d-89fd-4e95-af97-723b045eb41b

Hi, Its seems that you didnt enable TPM startup setting in Group policy. As this reason, you should do like this: StartIn search bar type gpedit.mscComputer configuration Administrative Templates All settings in the right panel find the setting named Require additional authentication at startupdouble click itenablein the options window, you can check like this Allow TPM,etc. More information refers following link: http://social.technet.microsoft.com/Forums/en/w7itprosecurity/thread/c3b5e90d-89fd-4e95-af97-723b045eb41b