> For the complete documentation index, see [llms.txt](https://www.adblocklabs.com/docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://www.adblocklabs.com/docs/guides/how-to-activate-adblock-license.md).

# How to activate your AdBlock license

Once you've purchased AdBlock, you'll receive a **license key** by email. Entering that key in the app unlocks your paid subscription and keeps your ads blocked. Here's how to do it. It only takes a moment.

> **Before you start:** you'll need the license key from your activation email. If you can't find the email, check your spam or junk folder.

## Activate your license

1. Open your **activation email** and copy your **license key**.
2. Open the **AdBlock** app and click **Subscription** in the left-hand menu.
3. On the Subscription page, click the **Add License** button.
4. In the **Add License** window that opens, paste your license key into the **License Key** field, then click **Activate**.
5. That's it! You'll see a **"Your license has been activated"** confirmation appear in the bottom-right corner, and your license status will change to **Valid**, along with your subscription's expiry date.

> **Don't have a license key yet?** If you haven't purchased a subscription, click **Upgrade** instead of Add License to buy one. Your license key will be emailed to you afterwards, and you can then follow the steps above to activate it.