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BitLocker Identifier generated after turning on Bitlocker

Q: BitLocker Identifier generated after turning on Bitlocker

I turned on Bitlocker on three new Windows 8.1 laptops and saved the 48-digit recovery keys and associated identifiers, but I forgot to indicate which laptops they are associated with. Is there any way to find the identifiers/recovery keys on my laptops so I can document this? Or do I have to decrypt the laptop drives, turn off Bitlocker, and start all over again to generate new identifiers/recovery keys? My only options under Manage Bitlocker are Suspend protection, Back up your recovery key, and Turn off BitLocker.

Preferred Solution: BitLocker Identifier generated after turning on Bitlocker

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A: BitLocker Identifier generated after turning on Bitlocker

Hello Edwin, and welcome to Eight Forums.

No worries. If you should ever need to unlock to drive, it'll provide you with a recovery key ID number that you can use to ID which recovery key to use. The tutorial below can give you more details about this to help get an idea if ever needed.

BitLocker Recovery - Unlock a Drive in Windows 8

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I am resetting my surface pro 3 to factory reset. it lock me out to bitlocker key. it shows me the key id. how can i retrieve the bitlocker key?

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Am super frustrated and would appreciate any help.   ThinkPad X1 6th Gen has been dead more than a week;  OS crashed, but several reboot and repair efforts failed.  Tried system restore.  That required a bitlocker key (which I found online) but then the machine would not accept my account password.  So unable to restore.    Multiple calls with Thinkpad warranty support (hardware and software) could provide no help or guidance.  (Except to send restoration media.)  Mind-boggling lack of support... and no way to escalate issue to someone who actually understood it.  Deeply disappointing experience w/ Lenovo. . So now the question is how -- after I reset my system -- do I avoid this nonsense in the future?   I shouldn't have to rebuild my laptop from scratch anytime there is an OS problem.  BTW, I did not order bitlocker, set up bitlocker or create any password for it.  Do not need it or want it.    Can anyone help with advice on how to set up my machine without it? Thanks.  

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I have an older Laptop that operates on  Windows 7 Ultimate,I have the Bitlocker Drive Encryption on and encrypted for Drive C:   I now started the process of encrypting my external usb hdd Drive E: which has a long way to go for it's large
size. During the encryption I needed to disconnect it so I paused the encryption like it says to do before removing or changing any files on it. I then plugged my drive into a newer laptop I have that operates on Windows 10,. I was prompted for the Bitlocker
Drive Encryption Password screen like normal just like on my Windows 7 laptop so I enter the password and it was correct and it began the encryption process again. When I finished with what I needed to do on the Windows 10 laptop I paused the encryption again
and disconnected the drive. I am now back on my Windows 7 Ultimate OS and plugged the drive in, Bitlocker Encryption Password Screen comes up again and I entered my password but now for some reason it's saying the password is incorrect?  "But It's
not incorrect",is there a reason why this has happen and a way to fix it? My second issue is that I have the recovery key written down on paper but on the fifth line of the eight lines that makes the recovery key I left out a number,did not write it correctly,
there for I cannot just reset my password using the key and get back to normal again. Any way to find the lost number to the key? As I do have the rest of it written correctly please help tha... Read more

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After rebooting one of our test machines, bitlocker wanted the recovery key.
There were no hardware modifications on that machine.
Error message in event log:
Bootmgr failed to obtain the bitlocker volume master key from the TPM because the PCRs did not match
Event id 24635, source bitlocker-driver
 Each time the machine starts, the recovery key is needed.
Any idea how to solve that issue and why it happens?
Second partition was created manually on that machine. So that's clear that bitlocker reacts...
But now: how can I confirm those changes so that the recovery key is not needed each time we boot?

A:Bitlocker enabled drive, recovery key needed during boot, PCS did not match, event id 24635, source bitlocker-driver

I would like to confirm if BitLocker accepts the recovery key?
Please update the BIOS to improve the stability for TPM first.
I also would like to suggest you disable and enable BitLocker again to reset the settings.
For more information, please refer to the following link:
Arthur Li
TechNet Subscriber Support
in forum
If you have any feedback on our support, please contact
[email protected]
 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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I need help turning on Bitlocker with password (not with flashdrive) on a HP Envy x2 15 inch tablet laptop. It's new and is running Windows 8.1 which I upgraded to Pro edition.

Bitlocker will turn on and function, but only via flashdrive key. When I attempt to turn on Bitlocker, it only offers the option to use a flashdrive. I don't want to use a flashdrive due to fears of loss. I want the password option. No matter what I do, I can't seem to get the password option to appear as an option.

Searches on Windows help and Microsoft help have produced no results other than the same general instructions to turn on Bitlocker in the same ways I have already tried. When I search the problem, no articles appear - null search results.

Has anyone else experienced this problem? And does anyone have a solution to try other than the usual turn on Bitlocker and select password.

Thanks much.

A:turning on Bitlocker with password in Win 8.1 pro

Hello cpsMcDonald, and welcome to Eight Forums.

It depends on if your PC as a TPM chip or not.

For now, double check through the tutorial below to see if it may help.

BitLocker - Turn On or Off for OS Drive in Windows 8

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I tried using HP BIOS Flashing utility on my HP Z400 Workstation, and it says it can't continue because I have Bitlocker enabled, but I don't have bitlocker on Win 7 Professional 32bit. I don't see it on the control panel or in context menus. I do see it set to manual in "Services" but the service in not running. Is there a way to find drives Bitlocked or are my drives being treated as bitlocked because of my antivirus program AVG?

A:BIOS flash error, BITLOCKER on? No bitlocker installed, Win 7 Pro

In the services window is there and option to disable or turn off...there should be. Just change the startup type from manual to disable and reboot. Then try your BIOS update.

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Hello and good afternoon, I have a issue where a manager started the Bitlocker process on the SD card in his Surface Pro 3

with Windows 8.1. The Bitlocker attempt failed at 3.4% completed but the SD card ended up being Bitlocked without providing the Bitlocker Recovery Key (I've never seen this happen before). He doesn't know the password for the SD card and of course
I've been tasked to somehow release the encryption so that he can get the required information off of the SD card. 

Is there anything that can be done to release the encryption on the SD card or has the SD card been made non-accessible moving forward?

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I have just reimaged my PC. After reimage the drive was 120GB(approx) free from 148GB HD. I turned on Bitlocker and after reboot the drive fills up until only 5.99GB free from 148GB.

I have done this twice now, but cannot understand why. I've googled "when turning on bitlocker c drive is almost full" but to no avail.

Anyone had any similar experiences, and know how to resolve? (will it automatically revert once the encrypt is complete?)


A:When turning on Bitlocker C drive becomes full.

Yes - bitlocker uses all but ~6GB of the drive during conversion, but it will give the space back once the drive is encrypted. This is completely normal.

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My BitLocker password is not working after format my c drive. instead i have my recovery that is also not working.
Please somebody help me to unlock my disk.

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I cant turn off the encrypted usb drive in windows 10 after turning it on with the bitlocker.
After im moving my important files to external hdd,i would like to turn off bitlocker in my usb 3.0 but it prompts me at incorrect function when attempting to turning off bitlocker.Im running windows 10 1709 edu/32gb internal/2gb ram

 i will discuss the detailed changes ive made in my usb drive before turning on bitlocker
first,i went to disk management and deleted the volume of my usb 3.0
second,i created a new volume in it and formatted it as ntfs so that it will appear in the system as hard disk drive instead of removable drive so that i can defragmentize it for better performance of the apps installed in it.
ive used bitlocker before on any removable drives and nothing have a problem,i can encrypt and decrypt anytime except at this time after i converted it :(

Thanks in advanced :).

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We are in the process of encrypting all our hard drives on our laptops. I've done about 20 with no problem but we have one user who we attempted to turn on and got the following message.
"Preparing your drive for BitLocker
An existing drive or unallocated free space on the hard drive will be used to enable BitLocker.

Boot files will be moved to drive D:, which will become the system drive."

Currently C: is the boot drive. Why would it insist on changing that? There is 80 GB or so free on the C: drive.

Here is some related info from a Microsoft website:
“Two partitions are required to run BitLocker because pre-startup authentication and system integrity verification must occur on a separate partition from the encrypted operating system drive. This configuration helps protect the operating system and the information in the encrypted drive. In Windows Vista, the system drive must be 1.5 gigabytes (GB), but in Windows 7 this requirement has been reduced to 100 MB for a default installation. The system drive may also be used to store the Windows Recovery Environment (Windows RE) and other files that may be specific to setup or upgrade programs. Computer manufacturers and enterprise customers can also store system tools or other recovery tools on this drive, which will increase the required size of the system drive. For example, using the system drive to store Windows RE along with the BitLocker startup file will increase the size of the system drive to... Read more

A:Unexpected message when turning on Bitlocker Win7 Ultimate X64

Post screenshot of disk management please

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BitLocker Recovery Keys don't work, they r for wrong Identifier. I have a "recovery code" but how in the world do you use a recovery code to get a new recovery key?

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I turned on BitLocker in my Win7 x64 several months ago and used it flawlessly.  I had configured it to use TPM+ Key and everything worked perfectly.  Then
a few days ago I wanted to increase to HDD size for the OS so I went to the Control Panel - Bitlocker Drive Encryption - and
clicked Turn Off BitLocker.  Bitlocker decrypted the drive and everything worked perfectly until I added a larger capacity
drive then restored the machine from a backup image, then when I tried to turn on BitLocker again I received this message "starting bitLocker the group policy settings for bitLocker startup options are in conflict and cannot be applied" The
Machine Joined to the Domain.

I went to Control Panel - Bitlocker Drive Encryption - and clicked Turn Off BitLocker.  Bitlocker decrypted the drive and everything worked perfectly.

"The Group Policy settings for BitLocker startup options are in conflict and cannot be applied.  Contact your system administrator for more information."

I cannot for the life of me figure out which group policies are conflicting.  I changed the "Require additional authentication at startup" to "Not Configured" but it didn't make any difference.  I have verified that *every* policy
under the BitLocker Drive Encryption folder is set to "Not configured".  

I have tried all of the following solutions to resolve this with no success:

I ... Read more

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Hi Team,
We see that computers are getting turned ON on Monday automatically and would show bitlocker recovery screen.
Logs show an event as below after the shutdown log ends. There are no event logs shown in between the shutdown event and Bitlocker event shown below.
Bootmgr failed to obtain the BitLocker volume master from tpm Event ID: 24636
I dont see any scheduled tasks triggering the startup.
Wake ON LAN option is disabled (Unchecked).
Troubleshooting done are as below

1-Suspend bitlocker - Restart PC.
2- Resume Bitlocker if not auto resumed.
----- Above did not help , so performed below steps

1- Suspend Bitlocker.
2- Decrypted the drives.
3- Updated BIOS and chipset.
4- Verified BIOS - whether Primary HDD is First boot device.
5- Re-encrypted the Drives.
We dont know what causes PC to turn ON itself and go to the recovery screen,
And also let us know if there is any way to find out exactly what triggered Bitlocker to go to recovery Mode.
Please help regarding this issue.

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Hi , 
I locked my external hard disk (Seagate- 1 TB) on Windows 7 laptop . The encryption was successful but when I later tried unlocking it, Its giving an error. Error
says "bitlocker drive encryption failed to recover from an abruptly terminated conversion". Please note that the Password and Recovery Key are correct and I have tried unlocking it
several times but no success.
Upon searching on internet, I came across the below thread which I yet need to try. Pray that it gets unlocked as I have got very important data locked up and the drive
volume is also 80-90% filled. 
Please help me out experts to get my data back.<o:p></o:p>

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I recently received my X1C 7th gen. I believe Bitlocker was enabled from the factory. On initial set up, of course I do offline account. I never set up or managed Bitlocker settings (that I remember).While trying to boot UBCD to test if I could boot, I turned Secure Boot off. Now when I go back in, I'm prompted for Bitlocker Recovery Key which I do not have. It helpfully mentioned to turn Secure Boot back on, which I did. But I'm still prompted. Is it really possible that Bitlocker is enabled from the factory install, and the key is not saved anywhere unless you specifically go in to manage Bitlocker after you start installing all your apps?Seems like I may be screwed.

A:BitLocker Recovery prompted after turning Secure Boot off, encrypted from factory, do not have key

As a quick follow up, is there a good link for doing a full reset of a system if the HD is lost? Want to do a clean factory reset - have to fiddle with or wipe the Bitlocker drive, reset Secure Boot stuff, etc.Ultimately its probably going to be faster to just start the wipe and rebuild than hope to get the drive back.

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Initially I found that BitLocker on the Go supported removable media like flash drives and external drives. Why isn't a CD/DVD supported since it is considered removable media? Will this support be available in future releases?

A:Will BitLocker or BitLocker on the Go ever support CD/DVD encryption?

Bitlocker to Go is not supported on CD/DVD. Your suggestion is valuable, I will forward this information to the appropriate department through our internal channel.
Both the Microsoft Product Team and Development Team will take into consideration all suggestions and feedback for future releases.
Currently, you may need third party software to encrypt CD/DVD.
Best Regards,
 Niki Han
TechNet Community Support

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Hi Mr/Ms
drive encrypted
with BitLocker 
I used
driver for three months my computer is broken I bought a new computer    when i was try my flash disk new computer its give me this  problem 
BitLocker Drive Encryption failed to recover from an abruptly terminated conversion. This could be due to either all conversion logs being corrupted or the media being write-protected
? know my passworrd but I do not know
the BitLocker
recovery key what can i do know pls some one help me 

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 The windows 10 Pro computer has died, and I would like to put the in my new computer with windows 10 home.   I would like to remove the bit locker password,  so I can reinstall windows 10 pro while keeping my files and apps,  
I'm unable to do this while the drive is encrypted.  How do I remove drive encryption from the drive while I have the drive slaved to a windows 10 home computer? 

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I am trying to enable BitLocker on a Windows 7 Ultimate x32 system with TPM. I follow the Wizard and when asked to encrypt the drive I select 'Run BitLocker system check' and 'Continue' (see attached sreenshot).
The USB is inserted and contains the recovery key (.txt and .tpm). During reboot I get:

Windows BitLocker Drive Encryption Information
The system boot information has changed since BitLocker was enabled.
You must supply a BitLocker recovery password to start this system.
Confirm that the boot changes to this system are authorized.
If the changes to the boot system are trusted, then disable and re-enable
BitLocker. This will reset BitLocker to use the new boot information.

Otherwise, restore the system boot information.


Windows then continues to start normally. After login I get an error message: BitLocker could not be enabled (see attached screenshot).
When I check TMP it shows as active, initialized and owned.

I've started out from scratch several times - same results. I can't figure out what the problem is.
This is driving me nuts.

Any help appreciated


A:Bitlocker: BitLocker could not be enabled

DELL: d420
Hard drive: System reserved 100MB NTFS, 27.84GB NTFS

Manufacturer name: BRCM
Manufacturer version: 2.10
Specification version: 1.2
Status: The TPM is on and ownership has been taken

I've since modified the group policy settings for Bitlocker to use a PIN.
I am still getting the same results.
I follow the wizard, select check the system, reboot, enter PIN, get the same "error" messages as shown in my previous post.

This makes no sense.

Any help?

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Hi.I am using Windows 8.1 Pro.I turned on bitlocker on one of my drives to secure it.i used fast method.after the encryption process the drive became inaccessible and giving access is denied messages.I tried to turned of the bitlocker but i cant because it just vanished.i cant find it anywhere on my system(control panel etc).someone told me reinstall the windows and the drive will become accessible again, but is there anyway that not including reinstalling windows.Thanks in advance.

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in bitlocker recovery key file there is a note for verifying the key:
"To verify that this is the correct recovery key, compare the start of the following identifier with the identifier value displayed on your PC".
From what I know computer identifier is MAC...
So I first compared the Identifier in the file with MAC. And sure it doesn't match.
How to find : "the identifier value displayed on your PC".  (My PC)

&quot;When you hit a wrong note it's the next note that makes it good or bad&quot;. Miles Davis

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I have been noticing that a large number of our laptops (HP ProBook 650 G1) have been prompting for the BitLocker recovery key after each reboot.  If we suspend then re-enable BitLocker the behavior seems to be resolved, but I would like to understand
what is causing the issue to help prevent it in the future.  I have gone over the "What causes BitLocker recovery" section here: https://technet.microsoft.com/en-us/library/dn383583.aspx?f=255&MSPPError=-2147217396#BKMK_WhatIsRecovery but
we have made no configuration changes or firmware updates to the devices.
In the System log on the devices, we are seeing Event ID#24635 "Bootmgr failed to obtain the BitLocker volume master key from the TPM because the PCRs did not match." errors.

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If a laptop is TPM activated and the hard drive is removed....

Can that hard drive be erased and used again in the same laptop as if new ?
Can a replacement hard drive be used in that laptop?
Or will the TPM prevent the new hard drive from working? if so why?

Many thanks my bosses are on my case for a new contract with a client!!!

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OS: Win 7 Enterprise

We have encrypted almost 4k laptops in our 200 location. I have a location now that is using a Dell Latitude E6540. They have been trying to encrypt the laptop for over a week and it will not encrypt.

> TPM key was previously cleared and a clean install of the OS was performed
> All Updated drivers have been installed
> The BIOS was updated to the newest version on Monday, since it would not encrypt
> TPM is turned on and active in the BIOS.
> The HD has two partitions
> Time zone is set correctly for the location

Laptop is running DDP Security Console version:

I have reviewed the logs and the TPM is not being activated like is should be.
It looks like it is hanging.
The log shows the following:
"W Bde : volume C: waiting for the TPM device to be configured"

I am thinking the OS install might not have installed correctly or there could be an issue with the TPM chip?

Anyone have any thoughts or suggestions?

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i had 2 partitions of my 1TB External HDD encrypted with bitlocker, took backup of my laptop on it (including recovery keys backup files). formated my laptop reinstalled windows and now password works fine on one of the external HDD partition but on the other partition it is not accepting it and the recovery key identifier is also totally different.

Any suggestions in recovering the key which is already backed up in the encrypted HDD partition.

thinking to format HDD and than attempt data recovery but not sure if i will be able to recover all or nothing.

update:i quick formatted one of the partition of HDD and now drive is not readable and whenever i plugged in this drive to computer it freeezed entire OS and upon unplugging it OS comes back to normal

A:bitlocker HELP

Hello Teky, and welcome to Eight Forums.

I've answered your question for this at the link below.

Bitlocker Recovery Key - lost - Windows 7 Help Forums

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I'm in the process of fixing crap that Acronis TrueImage broke while uninstalling. Apparently their developers forgot to make their application revert changes after the uninstall finishes.

Anyway, I'm having a weird issue. Took 2-3 hours last night to get Backup & Restore working being that Acronis broke that as well. Now that I have it working, I'm having another issue. I can't click on "Turn on" BitLocker. Trust me, my desktop is more than able to handle BitLocker. I've seen the option to turn it on awhile ago and now I don't. I'm confused.

Please, if anyone can help me. I'm sick of this software's damages. Almost causes for a complete wipe & reload.

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Having SSD with bitlocker activate by it self and we don't have any recovery KEY. how to bypass this, need to get urgent data from the SSD

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I have windows 8 & need my recovery key

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I have a Transcend external hard disk. I activated bitlocker on my HDD about 1 year ago, but bitlocker prevent me to use my external disk. I try to use recovery software like M3 Bitlocker Decryptor; it shows my data, but I can't save them.
if it is possible, give me your recommends, please.
[email protected] is my email.
thanks a lot.

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My daughters laptop has been locked by Bitlocker. There is no recovery key in her Microsoft account. What do I do?


if she doesn't have a backup key stored somewhere, then she is stuffed.
There is no recovery whatsoever for bitlocker without the password/key

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I guess this is a disk geometry question????

Can I use Bitlocker on this laptop?

Disk layout = Premium- XP Pro- Storage- Ultimate

The storage partition is an extended partition

If I can use BitLocker on this laptop will it protect all 4 partitions?


I have no experiance using bitlocker. However, from what I can tell it protects the OS volume. To protect other volumes besides the OS volume, it looks like it stores scripts on the encryted volume to encrypt other data volumes. So, you would have to boot up in ultimate to see the HP and XP volumes. So my guess is no on protecting all 4 partitions, if you want to be able to boot up in HP and XP. Here is where I was getting this from...

Windows BitLocker Drive Encryption Frequently Asked Questions

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Hi , Can someone please explain how to use this program ? I try it once on my drive and it created another smaill drive . why ? Even though now I reformated my computer back to original way it was before this . I am now curious as to what this program does and how to use it ?

Thank you

A:BitLocker ?

That will explain better than i could do
BitLocker Drive Encryption - Wikipedia, the free encyclopedia

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windows10 asking bitlocker key

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Hi all,

Apologies if this has been answered elsewhere, but can someone please advise on why a user would only be getting one bit locker attempt on Win 8 and not three?

On Win 7, you could perform a TPM Chip reset, but as far as I'm aware, you cannot on Win 8.

Any help would be appreciated. Thank you.

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i have locked folder with bitloker..i have deleted the recovery key..i have passward but it showes that this passward is incorrect and showes error code 0x8007007a..i have reinstalled the window 8 but still the folder has locked..how can i unlocked the folder..


You have your post marked solved as soon as you posted it. Did you solve your issue?

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Hey! I activated Bitlocker for my Operating system drive on a Windows 8 machine. But when starting the process I only can back up the recovery key. I have no dialog to choose how to unlock the drive. Thus even though Bitlocker is running, the PC can be turned and windows can be accessed by common user authentification. No password prompt appears at an early instant of the boot-process. What's wrong?


Hello Winny, and welcome to Eight Forums.

What brand and model numbers is your computer or motherboard?

You could either have a motherboard that has a TPM that is used to unlock BitLocker automatically at startup, or you selected to use a USB flash drive instead of password to unlock BitLocker.

Please go ahead and post a screenshot showing what options you have for your C: (OS) drive in "BitLocker" Control Panel" like below.

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This pertains to a particular HP PC - HP EliteDesk 800 G2 Mini 35W.
It is running windows 10 Pro. BitLocker is enabled. Sporadically a few of the workstations show the blue screen asking for a BitLocker Key. The key is entered and later it happens again. Numerous support calls to HP have failed and was told they don't support
BitLocker for Windows 10.
One thing I have noticed is that if I hit ESC at the BitLocker screen, It comes back with an option to skip this drive. I select Skip this Drive and then I get the option to Continue to Windows 10, Troubleshoot or Turn off your PC. I select Continue to Windows
10 and it starts the OS and I am able to sign into the network fine. I do a couple of reboots with no problem. Then later it comes back again.
I have updated the software, BIOS and TPM chip. I have also reset Windows 10 and re-configured it for our network which I thought worked for awhile but it did not.
Any help would be greatly appreciated.

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My computer went to a bitlocker screen and it gives me a website to use and a recovery key I'd but when I go to the website it makes me put in a Microsoft account i login but I never registered my device with Microsoft and my bit locker recovery key is not there but I went to the IT people on campus and they guy told me to go to the website and put in my recovery key I'd when I go to the website and there is no way to do that I'm so ****ing confused and I am a college student and don't have the money to buy a new laptop. Please help .

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I want to ask that, if I used Bitlocker on the PC, then after months, I want to sell the PC. But I've saved some personal information on that PC. So, I want to use DBAN to wipe the HDD. Will the Bitlocker stop me for doing so?

Million Thanks


Hi h24,

Bitlocker cant stop you from wiping the hdd with DBAN or any other format utility.


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There are now several of us, who have newer used bitlocker and it have still locked our external hard drive. How is this possible?

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I have a dell desktop that is asking for a bitlocker key
No one has the key 
from a dos prompt I got a two strings
one says numerical password
the other is labeled TPM

both strings appear to be hexadecimal

Can I get the pc unlocked with the data I have?

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What is it and why is it locking up my computer?

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Hello, When the TMP Manager shows TPM Status : "The secure platform module (TPM) is ready to be used"And , BitLocker Activation on System Volume shows immediatly : "This device cannot use a Trusted Platform Module.  Your administrator must set the "Allow Bitlocker without a compatible TPM" option in the  "Required additional authentication at startup" policy for OS volumes" Does it means that the BitLocker ( "this device" ? ) can't communicate with the TPM chip ?Is there logs about this ? Thansk for help 

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