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Office phone activation explained: Installation ID and Confirmation ID

What Office phone activation is, why some genuine Office keys use it, what the Installation ID and Confirmation ID are, and how Tecvane does it with you on WhatsApp.

30 September 2026 · 2 min read · Tecvane Solutions

Some genuine Office Professional Plus keys don't activate over the internet straight away. Instead, Office asks you to activate “by telephone”. It sounds old-fashioned, but it's an official Microsoft activation method, and it takes about five minutes.

Is phone activation genuine?

Yes. Phone activation is built into Microsoft Office itself. It's one of the official ways Microsoft lets a licence be activated, normally used when online activation isn't available for that key. No extra tools, patches or downloads are involved.

The two numbers

  • Installation ID: a long number (shown in groups) that Office creates from your key and your PC. It identifies this activation.
  • Confirmation ID: the matching code that unlocks Office on that PC. You type it into boxes A to H.

Because the Installation ID is linked to your PC, don't restart, update or reinstall Windows between getting the Installation ID and entering the Confirmation ID.

How it works with Tecvane

  1. Install Office from the official link we send and enter your key (File → Account → Change Product Key).
  2. Choose I want to activate the software by telephone and select Pakistan.
  3. Send us a screenshot of the Installation ID on WhatsApp with your order number.
  4. We reply with the Confirmation ID, usually within minutes.
  5. Type it in, click Next, and Office shows Product Activated. It's activated for life on that PC.

Our Office phone activation guide shows every screen with pictures.

Common questions

  • Do I have to call anyone? No. You send one screenshot on WhatsApp and we do the rest.
  • What if the telephone option doesn't appear? Send us a screenshot of what you see. We'll guide you, or replace the key under your warranty.
  • Will I need to do it again? Not on the same PC. If you change major hardware or reinstall Windows, message us and we'll help.

Office 2021 Pro Plus is Rs. 2,299 and Office 2019 Pro Plus is Rs. 1,799, both with a 1-year replacement warranty.

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