How to activate purchased serial key after a trial?

Thank you for purchasing a Synergy, we really appreciate that.

Synergy 3

In Synergy 3, the new serial key should be downloaded automatically when signing in.

If you have previously activated another key in Synergy 3 the new license key can be applied to Synergy 3 with the following steps:

1. On Windows & Linux: Click the About menu at the top of the window
2. On macOS: Click Synergy at the top of the screen, then click About
3. Click Update serial key
4. Then select to update by signing in or enter key manually

We have a help article that provides steps to change the license key by either method:

How to update your license in Synergy 3

Synergy 1

When you upgrade to Synergy Ultimate, a new serial key is generated in your account after you purchase the upgrade. In Synergy 1, the new serial key is not downloaded automatically, so to take advantage of the upgrade, you'll need to use the new serial key in your account.

Follow these steps to use the new serial key in Synergy 1:

1. Go to your Account page
2. Copy your Serial key for Synergy 1 Pro or Synergy Ultimate
3. Open Synergy on your computer
4. Select File then Activate
5. Enter the new serial key and save