Build 26300 Activation fail..

Hi Jay, after that many reinstalls I would stop and verify the licensing basics. Check Settings > System > Activation and run `slmgr /dlv` to see the installed edition and license channel. A Dell firmware license only activates its matching edition; an Enterprise/evaluation or mismatched Pro installation will not use an OEM Home entitlement. Insider evaluation builds can also display expiry information separately from activation. Back up your data, create official stable Windows 11 media, and install the edition originally licensed for the Dell. If stable Windows still rejects the digital license, contact Microsoft activation support with the Dell service tag and proof of the Pro upgrade.