Windows 10 ADK - Issues while uninstalling Windows 8.1 ADK and installing Windows 10 ADK

Installing Windows 10 Assessment and Deployment Kit (ADK) on SCCM 2012 R2 SP1 was a bit tricky. To "upgrade" the Windows ADK from 8.1 to 10, Microsoft recommend to remove Windows 8.1 ADK prior to the installation of Windows 10 ADK. We had some issue uninstalling Windows 8.1 ADK and installing the Windows 10 ADK

Uninstalling the Windows 8.1

Issue

Uninstall did not complete successfully.
An error occured while uninstalling "Deployment Tools."

Could not acquire privileges; GLE=0x514
Returning Status 0x514

You can also look at the ADK install/uninstall logs here: C:\Users\<Account>\AppData\Local\Temp\adk

We found different solutions online such as:

• Unjoin, install ADK and Rejoin the computer to the domain
• Run the installer as a Local Administrator or domain admin

Unjoining the machine was out of questions and the second solution did not work (Same error message).

I also tried to

• Remove one component at the time but always got stuck on the "Deployment Tools" component.
• Repair W8.1 ADK and try again

Same result...