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Another change in the message you see when the switch or other device does not respond to SNMP. We had a user accidentally change his SNMP port from 161 to 10. If SNMP times out and the port is not 161, you are told that the most likely cause is the port being wrong.
Like all versions released since Jan 1, 2016, we are code signing the executables and the installer with both SHA1 signed certificates and SHA256 signing. The ensures that the authorship of the software will be recognized across all current versions of Windows.
Download the installed trial of Managed Switch Port Mapping Tool v2.63 for Windows from http://www.SwitchPortMapper.com/