Windows 10: Lost Win 11 Pro license with email change

Hello,When buying laptop I've registered it with email address that has been deactivated recently It was my work email that has been disabled alltogether since subscription has ended, since than Windows wants me to activate but when I try to do so asks me to downgrade to Home edition becase it cannot connect to m organization email, error code:0xC004F074. I've managed to change primary email address on Microsoft account but error persist.What to do?

:)

 

Free upgrade from Windows 11 Home to 11 Pro using 10 Pro retail license

My current computer has an activated Windows 10 Pro retail license. I'm planning to replace my current computer by buying a new computer that comes preinstalled with Windows 11 Home, and then I understand I can use my 10 Pro license to upgrade to 11 Pro for free.

What's the most straightforward way of accomplishing this? The obvious approach that comes to mind involves two steps:

1. Reinstall Windows 10 Pro on new computer and activate with my existing retail license.
   
2. Upgrade new computer to 11 Pro for free through the settings.
   

Is there a simpler way of doing this without having to reinstall Windows 10? For example, would it be possible to somehow "trade in" my Windows 10 Pro license for 11 Pro? I'm fairly new to Windows licensing and am just trying to understand what is possible/best practice, with minimal effort.

 

Windows 10 Pro license to upgrade Windows 11 Home to Windows 11 Pro

As per title, my work got a laptop for a staff member which came with windows 11 home, but we need Win 11 pro to set up domain. Does buying and using a Win 10 Pro license in the "settings > activation > change product key" dialog correctly upgrade this windows 11 instance?

Wanted to double check as it's a $300 license

Thanks in advance

 

Excel will not use Thunderbird to email spreadsheet on Windows 10 Pro

I was trying to keep it simple, she's not the sharpest knife in the drawer but kind natured.
If i could emulate what I can do thenwhen she gets twined up I can talk her step by step.

if we can't sort why Win 10 Excel won't see T-B as the main email client then we'll just have to go with your suggestion.

I should have said Win 10 pro 64 bit?