Could you contact support@lansweeper.com and provide us with the following:
- A link to this forum thread.
- Screenshot of the Lansweeper webpage of one problem machine.
- Screenshot of a connection test performed to the same machine using the DeviceTester.exe, which can be found in Program Files (x86)\Lansweeper\Actions on your Lansweeper server. Please perform the test on your Lansweeper server, connecting to the problem machine, and show us the entire test window.