You need to ensure that
- Your Lansweeper server can resolve and ping computers/assets to be scanned and scanned computers can resolve and ping your Lansweeper server
- Ports required for scanning are open between your Lansweeper server and all scanned assets (please find details here). For Windows computers, this is port 135/TCP plus the dynamic port range of Windows (ports 49152-65535 on Windows Vista and more recent OS versions). If this is not possible, you need to use LsPush or configure a fixed WMI port on client computers
- Other requirements mentioned in this KB article are met
If you can't open required ports, we recommend that you use LsPush in order to scan Windows computers. This is a small executable which scans the computer and sends the result back to your Lansweeper server using direct server connection (port 9524/TCP by default), file share or mail. You can find details
here. It is possible to configure a scheduled task for running LsPush and deploy it via group policy.