Upgrade from windows 11 home to pro failed with Error Code:0x80070490

Question

Upgrade to windows 11 home to pro failed. Spend 100 dollars for nothing. I need a solution how to upgrade it or I need a refund. Who should I contact to solve this

Answer 1

Hi Bledar,

I have also had this problem in the past when I bought a laptop on the cheap and needed to upgrade from home to pro.
This one command has been my go to for solving it:

cscript c:\windows\system32\slmgr.vbs /ipk xxxxx-xxxxx-xxxxx-xxxxx

You need to run that command from an elevated command prompt.
And you need to replace the xxxxx-xxxxx-xxxxx-xxxxx part with your actual product key, which you should have gotten from the purchase. After running this, it should give you a pop-up saying that they key was applied. and you can then reboot to see if it has worked. If all fails, then a refund should be a fair option. I don't know if you purchased through the MS Store or a third party, but they all have refund processes that should be highlighted somewhere on their website.

Answer 2

If you already bought the upgrade from Microsoft Store but edition not changed, you can use Pro edition generic key to switch to Pro edition: VK7JG-NPHTM-C97JM-9MPGT-3V66T Simply change your product key from Settings > System > Activation > Change product key. Note, this key only changes Windows edition, and doesn't activate it. Additionally, refer this video fix:

https://www.youtube.com/watch?v=ZKm71D827u4

Hope this helps!

Answer 3

The standard solution described above did not work for me. I have an Acer Nitro laptop. What I needed to do was to update the Acer firmware (under optional updates). Then the previously paid for (online) update worked properly.