How to Fix SagePay Error Code 4020?

Updated On: April 8, 2025 9:08 am

SagePay Error Code 4020 is one of the most common errors users encounter in the SagePay software. This error message indicates that the user has not yet entered the IP address for the web server on the SagePay Administration Site. SagePay only accepts the IP address of servers that have been previously registered for the site, which connects directly via either Server or Direct integration.

If the error persists even after entering the IP address in SagePay, we recommend contacting our SagePay experts directly. Our Sage helpdesk professionals are highly skilled and can resolve such issues efficiently and promptly.

Essentially, Error 4020 is not related to the Sage Pay matching set extension. Most likely, the IP address from the web store functions is not included in the “My Sage Pay” account currently in use. This issue is generally easy to resolve manually—simply log in to your “My Sage Pay” account, click on “Settings,” confirm the IPs, and enter the server’s IP address.

Also Read: Sage Pay Error Codes and its Cause with Solution

Troubleshooting Steps for SagePay Error Code 4020

Follow these step-by-step instructions to resolve the issue:

Solution 1: Add IPs in SagePay Account

You can add the IP addresses in the SagePay Account Control Panel under the section labeled “Valid IPs.” For example, add the IP address of your hosting server. Follow the steps below to obtain the IP address:

• Open the terminal window.
• At the prompt, type ping, press the spacebar, and then enter the server hostname or domain name for which you want to obtain the IP address.
• Press Enter.

Solution 2: Obtain Accurate IP Address

If you are uncertain of your server’s IP address or your Sage Pay is still denying your IP address, you can perform some simple steps to get the accurate IP address Sage Pay:

• Manually register for a free SagePay Simulator account.
• Then, go to the Magento Admin site: navigate to System > Configuration > Sales > Sage Pay > Select Sage Pay Suite, and set the “Vendor” to the Simulator vendor.
• Configure the Sage Pay matching set extension to “Simulator” mode. You can do this in either the “Sage Pay Suite [DIRECT Integration]” or “Sage Pay Suite [SERVER Integration]” section.
• Save and refresh the cache and settings.
• Try setting it up again. If the 4020 error still appears, SagePay will return the IP address being used.

Solution 3: Advanced Computer User Solution

• Start your system and log in as an administrator.
• Go to Start > All Programs > Accessories > System Tools > System Restore.
• In the new window, select “Restore my system to an earlier time” and click Next.
• Choose the most recent restore point from the list and click Next.
• On the confirmation window, click next again.
• Restart your system once the restoration is complete.

Also Read: How to Fix Sage Integration Service Error 14101?

Final Words

Hopefully, you are no longer encountering SagePay Error Code 4020 and have successfully resolved the issue manually. If the error persists, you can take advantage of our email, online, or toll-free support services. Our technical experts can fix the SagePay error, regenerate your vendor name, and repair the IP address in case of a 4020 error.

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