Microsoft Office Confirmation Id Generator -

Applies to: Office 2019, 2016, 2013, 2010 (Retail and Volume License versions).

Note: This method works for legitimate, unused product keys. If you have a used or blacklisted key, the phone system will tell you "the product key has exceeded its activation limit" and will not provide a CID. microsoft office confirmation id generator


When you install a volume license or retail version of Microsoft Office (especially older versions like 2010, 2013, 2016, or 2019) and choose to activate via telephone, the process involves two critical numbers: Applies to: Office 2019, 2016, 2013, 2010 (Retail

  • The Confirmation ID (CID): This is also a 54-digit number, but it is generated by Microsoft’s central activation servers. When you feed your IID into the automated phone system, Microsoft’s server runs the IID through a proprietary, classified algorithm combined with a database check to ensure the product key is valid and not overused. The server then outputs the only CID that will unlock that specific IID. Note: This method works for legitimate, unused product

  • Crucially, the relationship between an IID and a CID is a one-way cryptographic function. For a given IID, there is mathematically only one correct CID.


    Instead of chasing a dangerous generator, there is a completely legitimate, free (yes, free) way to get a valid Confirmation ID for certain versions of Office.

    Microsoft maintains a telephone activation system for accessibility and offline scenarios. Here is how to use it safely: