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How to install Paya Connect Desktop (formerly Sage Exchange Desktop 2.0 (SED))

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  • Paya Connect Desktop must also be installed on the server if running Sage 100 Advanced or Premium
  • Sage Exchange Desktop version 1.0 will be automatically uninstalled during installation of 2.0 If SED 1.0 is still required to do processing in an older version of Sage 100, it can be reinstalled after SED 2.0 is installed.
  • Paya Connect Desktop (Sage Exchange Desktop) is required to add credit cards to the Sage Exchange Vault even if you are not processing credit cards with Paya. The record is placed in a Vault-Only when adding a credit card to a customer in Accounts Receivable, Customer Maintenance.
  • In some instances, the Paya Connect Desktop (Sage Exchange Desktop) will not properly install on one or more workstations. In some cases, firewall and antivirus were found to be the cause.. In a few other cases where it installs and works on some workstations, but not on others, the problem was a corrupted Windows profile.

Note: Sage Exchange Desktop (SED) 1.x Sunset - Sage Exchange Desktop (SED) 1.X became obsolete effective June 1, 2018. This version is no longer be PCI-DSS compliant and merchants needed to have upgraded to Paya Connect Desktop v2.0 prior to the June 2018 obsolescence date.

Note: Sage Exchange Desktop 2.0 & TLS Compliance - Softwares leveraging the Sage Exchange Desktop 2.0 (SED 2.0) integration are in compliance with the current TLS mandate. However, your infrastructure may need additional actions to become compliant with TLS 1.1and 1.2 communication protocols. For additional information go to Paya support to view TLS 1.1 and 1.2 minimum requirements for compliance.



CAUTION: Sage Customer Support does not assist with issues related to third-party products or enhancements, hardware, report customizations, state or federal tax-related questions, or specific accounting questions. Please get in touch with your Sage business partner, network administrator, or accountant for assistance. Please refer to our Scope of Support document for details.

Note: Paya Connect Desktop (formerly Sage Exchange Desktop (SED)) is a product from Paya (formerly Sage Payment Solutions (SPS)). If you are still encountering issues, you may want to contact their support team at (800) 261-0240. There is also a repair utility available from the Sage Payments Knowledgebase that may assist in repair.

Note: Sage 100 2017 and later requires Paya Desktop Connect (formerly Sage Exchange Desktop (SED)) v2.x to be installed on workstations to process credit cards with Paya. See Related Resources for installing SED 2.0 with Sage 100 versions 2015 and 2016.

Note: Sage Exchange Desktop 2.x no longer automatically installs. It must be manually installed on every workstation requiring access.

System Requirements

Verify that your computer meets or exceeds the following system requirements before installing Paya Connect Desktop v2.x

  • Microsoft Windows 10 or later
    • Note: While it may install Windows 7, that operating system is no longer supported
  • Requires TLS 1.2
  • Microsoft .NET Framework 4.6 (included in installer)
  • Sage Payment Solutions Application Deployment (included in installer)
  • Sage Exchange Desktop API (included in installer)


Sage Exchange installer can be accessed from Workstation Setup

  1. From the workstation, open File Explorer
  2. Access the "..\MAS90\Wksetup" folder on the server where Sage 100 is installed
  3. Right-click the Autorun.exe program
  4. Select Run as Administrator from the pop-up menu
  5. Click Install Sage Exchange Desktop and follow install instructions to complete the installation

Manual Download and Installation instructions

  1. Download can be located at Select Paya Connect Desktop v2.x from the Downloads drop down menu
  2. Download and extract the Paya Connect Desktop v2.x installer, following the Manual Installation steps.
  3. Right-click executable and select Run as Administrator
  4. Follow the instructions to complete the installation.

How to Uninstall and Re-install the Sage Exchange Desktop (SED) v1.x
Error: "You must wait while the Sage Exchange Desktop service attempts to install or restart on your system" in a Terminal Server (RDP) session or RemoteApp session
Is my Sage 100 version compatible with Sage Exchange Desktop 2.0? ("New version available")
Sage Exchange Desktop (SED) Repair Tool
Error: "You must wait while the Sage Exchange Desktop service attempts to install or restart on your system" with Sage Exchange Desktop 2.0 installed on a workstation
´╗┐How to Uninstall and Re-Install Sage Exchange Desktop 2.0 (SED)