Windows 10: Can windows 10 home license be upgraded to pro without buy a new product key?

if i have purchased a windows 10 home license key/product key, can i upgrade to windows 10 pro without purchasing a new license key/product key? i saw a windows 10 pro upgrade ad on the microsoft store app, it sells for $99, i assumed it would upgrade the previous license, and i thought i got a digital license digital entitlement instead of a new windows 10 pro license key is that correct? if so, what happen if i want to move my windows 10 home license key? will the license change to windows 10 pro or still windows 10 home or i need to buy a new windows 10 pro license key?

:)

 

Win10 Home to W10 Pro Upgrade Error using Product Key

The keys are there because 1. It is the product key you end up with when you gain a digital license for Windows 10 Pro through legitimate means and 2. When you do a clean install of Windows 10 (without adding an ei.cfg file), on a computer with a product key for Windows 10 Home stored in UEFI, you can use the generic product key to upgrade the Windows 10 Home that installs by default to Windows 10 Pro - but only if you have an existing digital license for that computer for Windows 10 Pro previously stored on Microsoft Activation Servers.

The reason the generic Windows10 Pro product key will not upgrade your Windows 10 Home to Pro is because you do not have a preexisting digital license for Pro for that computer stored on Microsoft activation servers.

 

Use previous windows 10(upgraded from Windows 7) Product key(license) for new PC

Hi,

I upgraded my Windows 7(Pro) to windows 10(Pro) in my old PC(laptop) ,Now I have to use new PC(Desktop) since old PC's motherboard is not working.Can I use my previous windows 7(pro) product key to activate freshly install windows 10(Pro) on
new PC?If there any easy steps to follow please mention.

If we can use single Windows 7->10 license in multiple machines(Not sharing license key,PC one at time),How many PCs can use same license key at a time?

Assume :- Current laptop( which has Windows 10 upgraded) is broken,then I will buy another Desktop and,If I can activate windows 10 with previous product key ,and if it;s replaced by another PC or change its Motherboard or processor .How many times current
product key can be extended for separate machines?

Can I transfer my current product key or license to another PC? or Can we uninstall the product key from the current device and use it for another device?

Please help and reply if anyone know the mechanism! asap This is an urgent matter.

Thank you.

 

Windows 10 Home digital license, but Windows 10 Pro installed. Want to stay Pro. Upgrade or buy Pro key?

My Windows 10 Pro expired. It was installed by a PC fixer years ago and I have no method to contact them now. Before that, I had Windows 10 Home installed via OEM & I still have the product key.

I know there is a method to reinstall Windows 10 Home, however I want to stay Pro but I want to activate the license.

Am I able to reactive by buying a Pro Upgrade or do I have to buy a new product key?