Open a run window by holding your Windows key + R key on your keyboard.

To fix the problem please follow these steps: You Must Sign In or Enter a Software Key To Use Camtasia For a VPN connection, if you can disconnect just to activate Camtasia you can connect again without issue after activation. To activate while using a Proxy Server please see this article.

Some reasons other than being offline we have seen cause this error are VPN's, Proxy Servers, and Firewalls. If the computer is offline you need to complete the Offline Activation steps. This means you either do not have an internet connection to proceed with the activation or something is blocking the connection to our Activation service. You can sign in to your Techsmith Account to locate and download your purchased version of Camtasia or you can purchase an upgrade to our latest version. You need to obtain a software key for that version. This means this software key does not match the version of Camtasia you are trying to activate. If you are copying and pasting it the key, please try typing it in manually. Make sure the software key was entered correctly. This means this software key was not typed or pasted properly or is no longer a valid license key due to various reasons. Please click Learn More in the message to learn what steps should be taken. The software key can no longer be used to activate Camtasia without action. This means this software key has been used more than twice to activate Camtasia and is in violation of our EULA (End User License Agreement). A single user software key can only be used on up to two machines for the same user.

A single user software key can only be used on up to two machines for the same user. This means this software key has been used more than twice to activate Camtasia and is in violation of our EULA (End User License Agreement). You do not have to take any action at this time, but if you wish to learn more about licensing activation, click Learn More in the message. A single user software key can be used on up to two machines for the same user. This means the software key has been used twice to activate Camtasia. You Must Sign In or Enter a Software Key To Use Camtasia.When unlocking Camtasia for Windows with your software key, you are presented with one of the following messages:

Camtasia software keys