---
title: "Activation Troubleshooting in Handset Designer"
slug: "activation-troubleshooting-in-handset-designer"
updated: 2023-08-03T10:46:58Z
published: 2023-08-03T10:46:58Z
canonical: "docs.avontus.com/activation-troubleshooting-in-handset-designer"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://docs.avontus.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Activation Troubleshooting in Handset Designer

This article includes helpful information and troubleshooting tips for activating Handset Designer.

## Unable to Connect to Activation Server

This message can occur for one of two reasons:

**No internet connection**

In order to use the Activate Online feature, you must have an active internet connection. Refer to *[Manual Activation of Handset Designer](/v1/docs/manual-activation-of-handset-designer)* for activation instructions for computers without an internet connection.

**Note:** Trial licenses of Handset Designer require online activation and an active internet connection during the trial period.

**Connection to activation server is blocked**

Network and firewall settings, user permissions and/or internet security can prevent connection to the activation server despite having an active internet connection.

## Activation Server Cannot be Contacted

![](https://cdn.document360.io/ae69c864-58f0-4711-91e1-d1c2f7dff95f/Images/Documentation/ecac5d5a-7a4a-4915-ba90-18b88f5cf8d9.png)

This message can occur for the same reasons as noted in *Unable to Connect to Activation Server* above.

## Unable to Activate this Computer

![](https://cdn.document360.io/ae69c864-58f0-4711-91e1-d1c2f7dff95f/Images/Documentation/b48ddeb5-2e20-4958-8fea-1cc9602e4a72.png)

This message most commonly occurs when the serial number/license entered is already activated on another computer. Refer to [*Deactivation*](/v1/docs/deactivation) for more information.