This process is used exclusively for Volume Licensing versions of Microsoft Office (e.g., Office LTSC 2021, Office 2019, Office 2016) activated via the Microsoft Actiation Server or telephone system.
If the Activation Wizard is frozen or crashed, you can retrieve the Installation ID using the Command Prompt. This is essential for IT administrators managing many machines. microsoft office installation id to confirmation id
The Confirmation ID is the "answer" code provided by Microsoft after receiving your Installation ID. It is also a string of numbers. Once you enter this ID into the activation wizard, it verifies that your copy of Office is genuine and unlocks the full functionality of the software. This process is used exclusively for Volume Licensing
Your Office suite is now permanently activated on that device. ⚠️ Common Troubleshooting Never share your product key or IDs in public forums
Generate the IID: Open an Office app (like Word) -> File -> Account -> Activate Product. Select "I want to activate the software by telephone".
The journey from Microsoft Office Installation ID to Confirmation ID is not a bug or an outdated annoyance—it is a deliberate security feature designed to protect volume licenses while allowing offline use. While it requires manual attention to detail, the process is straightforward once you understand the logic: