BitLocker encryption is now turned off. Are you still being asked for the BitLocker key or just the UAC consent to access the files? A screenshot will be helpful.
If it's just the UAC prompt to access the files on your D drive, taking ownership of the files or the parent folder should help.
You can run the following REG file, which adds the "Take Ownership" command to the right-click menu.
https://www.winhelponline.com/blog/wp-content/u...
Once added, press the Shift key, right-click on a file or folder, and choose "Take ownership" from the context menu. This changes the ownership of the files in that folder recursively.
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