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PayGo Interface Not Found? Your Host Computer Moved On and Didn’t Tell You.


Is Your PayGo Networked onto More than One Computer? If so, You Need a Static IP.

When you boot up your computer have you ever seen one of the following errors:

  • The file “paygo_interface.fmp12” could not be opened. (Not Found)
  • PayGo cannot find the host

This often happens when the host computer is configured to use DHCP instead of having its own static IP.

Many of our PayGo customers have PayGo’s point of sale software on multiple computers. Some of our customers have one workstation at a wrap desk in their storefront and another workstation in an office.  Some stores have multiple workstations located throughout their store(s). Those computers must be able to communicate.  In any and all multi-user environments, PayGo requires that your host computer always reside at the same IP address (aka static IP).

When your computer is connected to a local area network (LAN) it is assigned an address on the network. The address is called an Internet Protocol address (IP). An IP address is four sets of digits separated by periods with up to three digits per set. Unless otherwise set up, computers on a LAN get their IP addresses dynamically. (via DHCP). Imagine computers as nomads, happy to exist at whatever address the router wants to provide.

In order for your point of sale software to communicate and update information between multiple computers, the host computer must have a static IP. The other computers can wander and exist at any IP address the network tells them to live at so long as the host resides in the same IP address.

Many of our PayGo customers hire networking or local computer tech specialists to handle issues such as making sure that their computers and networks are properly configured to conduct business. PayGo Support and Maintenance Plans are for PayGo point of sale software related issues. Networking falls outside of those parameters. Our support team has noticed that not having a static IP address has been a recurring issue for many of our customers.

Since we do have the expertise required to help our customers with this issue, we have decided to offer LAN Static IP Services: We configure the host computer to use a LAN static IP rather than a dynamic (DHCP) one to insure that the IP address is static and does not change. This service is performed remotely. It does require that we have temporary access to your networking router. For a quote please contact or submit a support ticket through our Get Help system.

PayGo is a solution provider for independent retailers based in Rochester, Minnesota. Our primary focus is on point of sale / retail management software. We also offer a Merchant Account integration, a WooCommerce integration, Digital Marketing Services, and more.