Microsoft Office Installation Id To Confirmation Id

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.

For Office 2016 and later (Click-to-Run):

Most modern Microsoft 365 subscriptions activate instantly over the internet. So why do you need to deal with Installation IDs and Confirmation IDs? There are three primary scenarios:

Do not just call the first Microsoft number on Google. Look inside the activation window on your screen. It should provide a toll-free number specific to your country and product.

When activating Microsoft Office, you typically enter a 25-character product key. However, in certain scenarios—such as activating over the phone, using volume licensing editions, or installing on a device without internet access—you will encounter two specific terms: the Installation ID and the Confirmation ID.

This guide explains what these IDs are, how to find your Installation ID, and how to convert it into a Confirmation ID.

To convert an IID to a CID, you must first generate the IID. Here is how to reach that screen in modern versions of Microsoft Office.

If you are doing this because you lost your product key but the software is installed, try this first:

This is the original "IID to CID" converter.

The robot will read a new set of numbers back to you (the CID). Listen carefully. It will usually repeat the blocks twice. Write them down in the exact order.