---
title: Connection Error!
description: When activating the license for my plugin, I get a connection error message.
---
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# Connection Error!
## When activating the license for my plugin, I get a connection error message.
When activating your license, the plugin needs an internet connection to find your serial number in our database. This happens only the first time you launch the plugin on a new machine, after that, you'll be able to work offline.
During this step, if your firewall is on, the license activation may fail, leading to a "Connection Error!" message in the license window :
Please, try deactivating your firewall during this step, and try again.
If you are on a Windows machine :
[https://support.microsoft.com/en-us/windows/turn-microsoft-defender-firewall-on-or-off-ec0844f7-aebd-0583-67fe-601ecf5d774f](https://support.microsoft.com/en-us/windows/turn-microsoft-defender-firewall-on-or-off-ec0844f7-aebd-0583-67fe-601ecf5d774f)
If you are on a Mac :
[https://support.apple.com/en-gb/guide/mac-help/mh11783/mac](https://support.apple.com/en-gb/guide/mac-help/mh11783/mac)
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