Bitlocker enabled USB memory worked 10 minutes ago, now I can't access it.

Shows up as a removable disk and when I open it prompts "You need to format the disk in drive F: Before you can use it"

C:\Windows\system32>manage-bde -status f:
BitLocker Drive Encryption: Configuration Tool version 6.2.9200
Copyright (C) 2012 Microsoft Corporation. All rights reserved.

Volume F: []
[Data Volume]

    Size:                 Unknown GB
    BitLocker Version:    None
    Conversion Status:    Fully Decrypted
    Percentage Encrypted: 0,0%
    Encryption Method:    None
    Protection Status:    Protection Off
    Lock Status:          Unlocked
    Identification Field: None
    Automatic Unlock:     Disabled
    Key Protectors:       None Found

Hi,

For this issue, I would suggest you Uninstall and reinstall USB host controllers and check it.

You may check after uninstalling and reinstalling the USB drivers if you are able to connect. You may disconnect all USB devices and then perform the following steps:

1.Open Control Panel.

2.Click System and Maintenance, click System, and then click Device Manager.

3.In Device Manager, double click to expand "Universal Serial Bus controllers", right click on the Host Controller, click "Uninstall" and click "OK".

Check if at all there is an exclamation mark along the driver, it suggests issues with the driver installed.

4.Repeat the step 2 to uninstall all items under "Universal Serial Bus controllers".

Then, restart your computer and Windows 8 will reinstall all USB controllers automatically.

Note:  Connect the USB devices to the Computer only after the conflict drivers are uninstalled and once the Computer is restarted.

If the issue persists, it is probably due to "USB selective suspend setting- Enabled" in power management. Please disable it and check.

Meanwhile, try the solution from the link below about a similar case to narrow down the issue.

http://social.technet.microsoft.com/Forums/en-US/f5a3e1c6-1ab3-4567-8a26-18c2562f023d/how-to-save-all-my-data-back-without-formatting

If it doesn't work ,I suggest you test the USB device to other computer for a test.

Regards,

Followed your steps but no luck. Revocery programs can't use the partition (path not found)

Tried in 4 different computers, both windows 7 and 8.

Hi,

According to your description, I suggest you use manage-bde command with administrators privileges to decrypts the drive.

Manage-bde:

http://technet.microsoft.com/en-us/library/ff829849.aspx

If the issue persists, it seems that your USB device damaged.

Meanwhile, If the your data is very important for you, to recover your data from USB device,  I would like to suggest you contact the professional data recovery company for help.

Regards,