1. Check your Internet connection. If your computer is not connected to the Internet, F-PROT Antivirus will be unable to connect to the server.
2. Do you have a firewall installed? Many personal firewall's take it upon themselves to close all traffic unless it is explicitly opened. Please make sure that F-PROT Antivirus is 'allowed' through to update. The F-PROT Antivirus uses port 80 (HTTP) to update.
3. Do you connect through a proxy? Make sure you entered the right port in the proxy settings. The F-PROT Antivirus uses port 80 (HTTP) to update.
4. Do you have Internet Explorer installed on your computer? Please note that you need Internet Explorer 5.0 or newer installed on your computer so that F-PROT Antivirus can update. For further information, see What are the system requirements for F-PROT Antivirus?
5. Make sure that your Subscription Key is entered in the program and is not expired. Remember, version 6 of F-PROT Antivirus requires a valid Subscription Key to be able to download updates.

You may buy a subscription or get a trial subscription to obtain a Subscription Key.

For registered subscribers, if you do not remember your Subscription Key, see How to obtain a subscription key.

If none of the above solves the problem, please contact technical support.

• How to set up your proxy server
• How to enter a Subscription Key in the program
• How to buy a subscription within the program
• How to get a trial subscription within the program
• Subscription Renewal
• Can I schedule the delivery of updates?