Client-Server applications use the TLS protocol to communicate across a network in a way designed to prevent eavesdropping and tampering. The PCI Security Standards Council has declared that TLS 1.0 or 1.1 no longer meet minimum security standards due to security vulnerabilities for which there are no fixes. 

Please have your IT professional review the following Microsoft document: How to enable TLS 1.2


There are 3 additional items to consider in relation to TLS 1.2:

  1. If you are processing integrated credit card transactions using Netepay. You may require a reinstallation (same version – newer install, no upgrade fee)
  2. If you email from System Five using Outlook 365 (using SMTP) you will require  System Five Version or higher 
  3. Beginning with version, The S5WebAPI Service now only accepts connections using the TLS 1.2 protocol with 256-bit encryption.


If require an update to version or higher you can have your IT self serve an update following the instructions HERE


Please have your IT examine any managed firewalls to ensure they are using TLS 1.2 or greater

Ensure you are using web browsers that use TLS 1.2 or greater. Supported browsers include:

 - Google Chrome, version 29 and higher

 - Mozilla Firefox, version 27 and higher

 - Microsoft Edge

 - Apple Safari, version 7 and higher


Internet Explorer (IE) is officially retired and out of support as of June 15, 2022.