Reset windows 10 local admin password with bitlocker enabled

I tried to migrate a pc to a new domain upon reboot it says the trust relationship has failed. It cannot login to the old domain either. Stupidly I did not set the local admin password beforehand. There are various windows password reset tools that you boot from but I need one that works with bitlocker if possible? I have the bitlocker password just not the local admins.
Who is Participating?

[Product update] Infrastructure Analysis Tool is now available with Business Accounts.Learn More

I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

Unless you setup and exported the bitlocker key to recover, you are in a bit of a pickle.

Resetting the password on the account will lock access to the files.

The simple process to regain acces to the system is boot the system using windows media, enter the repair mode, that gets you to a command ..

In c:\windows\system32
Rename utilman.exe utilman.bak
copy cmd.exe utilman.exe

Boot the system from the HD, hit ease access bottom, right at the login screen

Add a new local admin user
net user newusername *

net localgroup administrators /add newusername

Now at the login screen, alt-ctrl-del
.\newusername and password.
This should get you back on the system that you either rejoin the old domain, and get the data off, versus presuming that a direct transition as you attempted will preserve the data and transfer it ......

Once done, reverse the process ..
All reset processes require that you can mount the drive. The setup disk alone will be enough for this operation. Boot it, press shift f10, a command line appears. Mount the drive using
Manage-bde -unlock c: -pw password
Then, execute the steps that Arnold wrote down.

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
Seth SimmonsSr. Systems AdministratorCommented:
No comment has been added to this question in more than 21 days, so it is now classified as abandoned.

I have recommended this question be closed as follows:

-- McKnife (https:#a42465568)
-- arnold (https:#a42465510)

If you feel this question should be closed differently, post an objection and the moderators will review all objections and close it as they feel fit. If no one objects, this question will be closed automatically the way described above.

Experts-Exchange Cleanup Volunteer
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Windows 10

From novice to tech pro — start learning today.