Unable to unlock a bitlocker drive

[timn]

Thanks for providing a very good file manager.
I'm running MC 7.3 64bit under Windows 10 Creators update
Steps
Lock my bitlocker USB HD
Right click on the Drive letter and select Unlock Drive
Expect
A dialog to enter the password
Observe
A warning dialog saying
(X)F:\
    The directory name is invalid
Extra
I can unlock the drive with File Explorer

[Mathias (Author)]

Not sure what issue you have.
MC do not do any special handling for bitlocker. It is all windows.
The popup shown for device is all handled by Windows..

[timn]

I'd like to use MC to unlock my bitlocker drive but I haven't been able to.
I have to use File Explorer which brings up a dialog to enter the password.

[AnW]

I can confirm that MC has problems with BitLocker drives. Let's assume I have encrypted pendrive in my USB port. Now I select this drive using combobox or by clicking on drive icon in the toolbar.
Expected behavior: dialog box with information that drive is encrypted and question "Do you want to unlock it?"
Current behavior: content of drive C: is displayed

I can also confirm that I see exactly the same problem as reported by timn in initial post.

Tested on Win 10 1703 x64 (all updates installed).

[Mathias (Author)]

As I said..

It is out of the control of MC. when you show the Windows Shell Context menu and select default windows items in that. All that is handled by windows.
MC don't have any control over what happens after you pick and item. MC does not even know what item you picked.

[AnW]

Hi Mathias
I can only say that Total Commander has support for Bitlocker drives. It displays the message: This drive seems to be locked by Bitlocker! Unlock it? I can click Yes and two new dialog boxes are displayed. One is standard dialog box from Windows where I can type password and the second one is from Total Commander: "Please enter the Bitlocker password!" After I enter correct password TC automatically closes its own dialog box and displays content of the unlocked drive.

Maybe it is not easy to do but it looks that it is possible.

[Mathias (Author)]

But then you are not asking windows to unlock it from the standard shell menu.
But from a feature inside the program.

[AnW]

I have made a short video where you can compare Multi Commander and Total Commander. I have Polish Windows, but key messages are translated. First I use standard shell menu in both programs and then I simply select locked drive from combobox.
https://drive.google.com/open?id=0B3uL41EadzG1NTlhdWxieFI0MEU