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How to check and temporarily stop firewall software
The following procedure is intended for troubleshooting purposes only. If firewall software is found to be the cause of TechTOOLS not operating correctly, please refer the problem to the local system coordinator for additional support, and possible firewall re-configuration.
Many popular personal firewall utilities show a status indicator icon on the system tray located at the bottom, right corner of the screen.
NOTE: TechTOOLS is NOT supported on the Windows 10 Operating System.