Microsoft distributes licenses of windows 10 in many channels with different rules but if you re a regular user usually you can only obtain a license through the retail or original equipment.
Windows 10 upgrade retail license.
If you do have a copy of windows 10 pro or maybe you found a retail copy of the upgrade for less than microsoft charges you ll have a product key alternately called a license key that enables windows 10 pro.
You ll need it to replace your current license key.
If you re already a windows user download a windows 10 upgrade so you can experience the latest in windows technology.
Windows 10 does not have a deactivation option.
Reactivate windows 10 using a digital license.
If windows 10 can retrieve your key from the motherboard then there s nothing else you need to do.
When you walk into a store or pop over to microsoft s website handing over that 139 for windows 10 home or 200 for windows 10 pro gets you the retail license.
If you work with big data create large graphics edit video or need cad computer aided design windows 10 pro for workstations is for you.
Use this guide if you re reinstalling windows 10 without a printed or emailed product key.