If you work for or help support a small institution such as a private school and purchase volume or MAK licenses from MS for PCs, make certain you keep evidence of purchase for those licenses. The MAK or VL code is not enough. Be prepared to provide such evidence to Microsoft and be prepared to spend a frustratingly long time on the phone with someone having a thick foreign accent should that code leak into the wild. We've just had that happen at a school in which I provide volunteer support. One of the teacher's PCs suffered a hard drive crash. All of these PCs are built on identical hardware and were originally set up by creating a master image and cloning the rest. The MAK license, unlike old VLs, requires activation. The need to restore an image later will, again, require activation. If the maximum number of licenses assigned for that MAC code has been reached or MS has identified the code as having been leaked, you cannot re-activate the OS without providing MS with proof of purchase and details about your license agreement. We just ran into just that scenario and, although MS has been paid, they want to either be paid again or shown proof of legitimacy by their customers. A call to MS was made by myself and I was told that the key had exceeded the limit by thousands and was now blocked until we show proof of purchase. Keep those documents!
Please don't make this evidence to evict MS for Linux. This is a school environment and uses software that has no Linux alternative such as for Smart Board applications and more.

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