A product key is a 25-character code used to verify that your copy of the software is genuine. It typically looks like this: XXXXX-XXXXX-XXXXX-XXXXX-XXXXX .
It binds the software to your hardware or Microsoft account. microsoft excel 2019 mso product key
If you bought a PC that says "Includes Office 2019," the key is often pre-activated. You do not need to enter it manually unless you reinstall Windows. A product key is a 25-character code used
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