Microsoft officially ended all support, security patches, and technical updates for .
You have two options:
If Office is already installed and working on another machine, you can use tools like Belarc Advisor MagicJellyBean to extract the key from the system. Microsoft Support 2. How to Enter the Product Key enter your product key microsoft office 2010
Because activation servers for such an old product are no longer a priority, online activation may fail even with a valid key. If this happens, try phone activation as a workaround. Microsoft officially ended all support
While it is still possible to use Office 2010, continuing to run unsupported software exposes your system to significant risks: enter your product key microsoft office 2010
Look toward the right side of the window for the button.