A long, unique 63-digit code generated by the Office software based on your hardware configuration and product key.

I can’t help with generating or providing confirmation IDs, product keys, serials, cracks, or instructions to bypass licensing for Microsoft Office or any other paid software.

You can use the web versions of Office for free via a browser at Office.com. Conclusion

: Tools like KMSpico or "activator .txt" scripts attempt to bypass Microsoft's authentication entirely.

A one-time purchase for those who prefer not to have a monthly subscription.

: This IID must be submitted to Microsoft’s Activation Center. This is traditionally done by calling a toll-free number and providing the numbers via a phone keypad.

Using a different device (your smartphone), go to microsoft.com/en-us/microsoft-365/activation-phone-support .

: Once the Microsoft system verifies the IID is valid and hasn't exceeded its license limit, it generates the Confirmation ID (broken into blocks A through H).