I have a freshly installed Windows 2008 R2 Server with a C drive containing the operating system and d drive as a normal data drive. Ive turned on encryption on the d drive using Bitlocker. The encryption processed all the files and completed successfully. On reboot however when i unlock the drive with the password i used to encrypt it, it unlocks the drive ok and i can access the files but it states:

You cannot save files on this drive. Your system administrator has blocked you from saving files on this drive because it has been unlocked using a password. To save files on this drive, unlock it using another method such as a smart card.

The drive is now accessible but all the files are read only. Am i missing something? What do i need to do to get read/write access to the files again?

PS. This is the second time Ive reformatted and encrypted the drive thinking it was a one off problem. Please note that the server is on a windows AD domain.

closed as off-topic by Greg Askew, peterh, Jenny D, MadHatter, mdpc Aug 22 '17 at 1:58

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I was able to resolve this problem by creating a group policy object with the following setting disabled.

Computer Configuration/Policies/Administrative Templates/Windows Components/BitLocker Drive Encryption/Fixed Data Drives/Deny write access to fixed drives not protected by BitLocker

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