My Dell system also came installed with Windows 7 Enterprise (while I have an official hard copy of Ultimate). Running a the installer normally gave me the following message:
The language or edition of the version of windows currently installed on your pc isn't supported by this tool
I found that upgrading for free is possible by doing the following:
- Download and run "as administrator": https://softfamous.com/windows-7-downgrade/
- Click the downgrade button
- do not re-install windows (for a proper downgrade, this is necessary, but we don't need that). At this moment, some registry keys are changed, but officially you're still on Windows 7 Enterprise.
- Download and run the Windows 10 installer. It'll proceed now as normal. After upgrade, you'll be upgraded to Windows 10 Enterprise. License info (under Settings > Update & Security > Activation) will show "Windows is activated with a digital license".
slmgr will show you have a valid license.
Alternatively, you can (probably) do this by hand just as easily by following the registry changes explained in this post. I didn't try this, but it's likely the same as the downgrader executable does for you.
If your Enterprise license is part of a volume license, you should ask your company for a proper upgrade procedure instead, they'll probably get it as part of their subscription.
As of Feb 2022, the upgrade to Windows 10 is still free.
