Some PC's wont scan

[MR1371]

I'm aware that LSpush can help lansweeper bypass any 3rd party fire walls and I'm willing to try it, but I still have one concern. Why are some of my PC's able to scan fine while others are blocking lansweeper with their firewall? We are on a group policy and every computers firewall protection is identical. Any idea what could be going on here?

[MakeBug]

I have the same problems here with some devices. Now I've just gone crazy and tried various things.
We deactivated the windows firewall for domain-networks on all of our devices because we have our own for sure.
But now even if it's NOT active, it seems somehow to still have blocked WMI, even if it's deactivated, you still have to open the WMI-Service for domain-networks. And I have not the slightiest idea WHY! But when I did that, suddenly the scanning worked. After the initial scan, I reset the settings back and it still worked No idea why, but I tried this on 10 devices atm. and it always worked

[Daniel_B · Accepted solution]

In order to remotely scan Windows computers, Windows remote administration must be enabled and RPC needs to be configured correctly. The VBS script mentioned in this article helps to do this when you run it as administrator on affected target computers.

If this does not help, either one of the causes mentioned in this article applies to your situation or there are routers or 3rd-party firewalls which block the ports used by WMI. You could try configuring a fixed port for WMI, but this needs to be done on each client computer.