Depends on the country. I think the EU declared the resale of Windows licenses legal a few years ago. Microsoft trying to fight that doesn't make it illegal.
Re:Useless Windows 10 Features
by michaelmrose on Tuesday August 27, 2019 @01:27PM
(#20812268)
When you bought a physical item in a store you have a right to resell it be that a computer or a disk.
Even if you can resell a key as part of selling a copy of windows you paid for you can't sell your employers property, can't sell part of a contract, can't sell more than you actually paid for.
If the company purchased the right to have n machines at their company run windows and each key can be activated n * x times nobody sold you the right to sell n * x copies of windows to everyone on the internet.
Like it or not those agreements aren't sales and the keys aren't a physical item you have purchased they are just a technical measure to constrain users from sharing a single ISO file to their million closest friends.
Even if true, I rather doubt that extends to an employee selling access to their employer's volume licensing key (it seems clear that's what's happening here)
They are also participating in a commercial piracy endeavor that the company who was issued the key AND Microsoft have an interest in shutting down. Ms because such endeavors attract customers who could otherwise trivially be converted into buyers. Companies because they could get audited and fined.
This is as illegal and higher risk than torrent sites.