you can grab the MSI from www.connectwise.com/install
command line should be: msiexec.exe /i ConnectWise-Internet-Client.msi /qb
compatible for both 64/32 bit versions of Microsoft
more config info (not really required): https://www.connectwise.com/university/content/User_Documents/Implementation/1%20-%20Pre-Installation/Workstation-Checklist-DotNet-client.pdf
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