bitlocker, TPM, and guest account
Hello, I originally posted this question on Microsoft Answers but was advised to post here instead. I would like to encrypt my drive (to secure the contents of my user account) but would also like to allow guests to use my computer. If I buy a Windows 7 Ultimate laptop with a TPM (Trusted platform module), my understanding is that this allows me to use bitlocker in a way that does not require the user to enter the encryption password in order to decrypt the disk at system boot or when coming out of hibernation/sleep. Does this mean guests will be able to use my bitlocker protected computer without needing to know the encryption password (via an unprotected guest account), or does Windows disable use of the guest account when TPM protected bitlocker is turned on? I ask, because I know the guest account gets disabled in Mac OS X Lion when filevault encryption is turned on. If it is possible (to use a non-password guest account under bitlocker) what are the security implications of this setup? Perhaps there are no implications because of permissions restrictions of the guest account? If there are some implications, how tech savvy would a thief need to be to exploit them?
August 25th, 2011 7:53pm

Hi, Thanks for the post. There are several manners that can encrypt a Volume by Bitlocker. I suggest you to enable Bitlocker via the comfiguration of TPM + Startup key. To protect your data, you only need to protect the Startup key. The guests also do not need to type any password. For more information about Bitlocker, you may access the following links. http://technet.microsoft.com/en-us/library/cc732725(WS.10).aspx Please remember to click “Mark as Answer” on the post that helps you, and to click “Unmark as Answer” if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread. ”
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August 29th, 2011 10:32am

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