Windows 10: Transferring Win10 retail to new PC

I plan on buying a retail copy of Win10 before the new year but I also plan to build a new PC before the end of 2020. The copy I'm looking at says retail 1PC and I'm pretty sure it just means one at a time. Just want to be sure that when I build my new PC I can still decommission old PC and install on new build.

:)

 

Building a new rig to transfer Windows 10 but not sure if it's OEM or Retail

If you upgraded from a retail box copy Windows 7, it has retail transfer rights.

Use the following to see if you can find the original Windows 7 key. If you can't find the original Windows 7 key, you won't be able to transfer it.

Step 1: How to Find Your Product Key After Upgrading to Windows 10

Step 2:

• How to Transfer your Windows 10 License to a New Computer

 

Can I upgrade OEM Win10 Home to Retail Win10 Pro?

Moving to a new PC that I'm building myself. Currently running Dell OEM Win10 Home. New PC will have Win10 Pro, MSDN (multi-activation or retail keys) version.

My backup software can do a "system transfer" that will allow me to transfer everything (OS and applications) to the new computer.

Should I upgrade from OEM Home to MSDN Pro on the old computer and then transfer everything to the new computer?

Or just install Win10 PRO MSDN on the new computer and use the backup software vendor's application transfer program to move the applications and registry entries.

My goals are:

1. Not have any "dinosaur bones" either from the OS on my SSD from the old OEM Home version on the new PRO version
2. Not have to reinstall and reconfigure everything (which would take about a week)

Thanks for any advice I can get...

 

Win10 licence transfer

I have a retail licence for win10 Pro on an old machine (that is obsolete and no longer used) and I would like a clear step by step guide as to how I can transfer this to a new machine that is currently running win10 home. I've tried upgrading with a win8.1
retail key but that did not work. Contacting the local Microsoft helpline did not help either as apparently "this is no longer possible" despite the fact it is in the EULA.

Anyone know how to do this?