If your product key isn't working, there are a few things you can try before contacting support. First, make sure you have followed the instructions carefully for your specific product and that you are following the instructions for the correct operating system. You can find all the instructions at this link.

Next, double-check that you have purchased the correct product key for the product you are trying to activate. For example, make sure you have purchased the correct version of Windows. You cannot activate Windows 10 Pro with a Home key or upgrade from Home to Pro with an OEM license.

If you have checked everything and the product key still doesn't work, please report the problem by clicking the button below and filling out the form: