Free tool
Retail or OEM, new PC or new motherboard — what Microsoft's licence terms actually say.
What kind of licence do you have?
What are you trying to do?
Pick a licence type and a scenario to see a verdict.
This tool inspects and validates nothing. It summarises Microsoft's published licence terms against the answers you give. For a specific agreement, check the terms supplied with your licence.
Whether you can move a Windows or Office licence to another machine depends on how it was licensed in the first place. Retail licences may be transferred to a replacement PC once the old installation is removed; OEM licences are tied to the device they were first installed on. Answer a few questions and this tool explains the relevant terms and gives you a verdict. It cannot check whether a particular key is valid or genuine — only Microsoft can do that.