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Upgrade Any Remaining Windows 7 OTCnet Workstations to Windows 10 by End of January 2021

In addition to Windows no longer being supported by Microsoft as of January 14, 2020, the Treasury Web Application Infrastructure (TWAI), where OTCnet resides, will implement a necessary security upgrade in January 2021.

As a result of this upgrade, Windows 7 users will no longer be able to access OTCnet using Internet Explorer. Therefore, in order to avoid any OTCnet access issues, we ask that that you upgrade all Windows 7 terminals to Windows 10 by end of January 2021.

If there are instances where workstations cannot be upgraded by to Windows 10 by January 2021, the current version of Chrome can be installed on those terminals as an interim solution to access OTCnet until the Windows 10 upgrade is completed. Please let us know if you have any Windows 7 terminals where the current version of Chrome cannot be installed.

Please communicate with your IT department to reconfigure your terminals to Windows 10 and download the latest version of the OTCnet firmware (Check Processing only) and OLB.

Below are Printable Job Aids to share with your IT/network department to assist with your OTCnet transition to Windows 10:

System Requirements Guide:

System Requirements Guide

Check Capture Terminal Configuration:

Configure a Check Capture Terminal Online
View a Terminal Configuration

Download and Install Firmware (Check Processing Only)

Download Firmware
Install Firmware

OTCnet Local Bridge (OLB) Application:

Download the OLB Application
Install the OLB Certificate
Install the OLB Application
Upgrade the OLB Application
Create the OLB Profile
Import OLB Credentials


If you have any questions or concerns, contact the Treasury OTC Support Center.

Treasury OTC Support Center
Toll free phone: 866-945-7920
DSN phone: 510-428-6824, Options 1, 3, 4

Last modified 12/21/20