Troubleshooting vCenter scanning issues

vCenter scanning is a feature introduced in Lansweeper 7.0. If you are using an older Lansweeper release, you will need to update by following the instructions in this knowledge base article.
Not all Lansweeper licenses support vCenter scanning. If your particular license does not support this feature, please visit this page for more information.

In order for Lansweeper to scan your vCenter servers, you need to ensure that TCP port 443 is opened on the vCenter server and that the HTTPS title contains the text "ID_VC_Welcome". If you encounter issues while scanning vCenter servers, you can go through the troubleshooting steps below to resolve the issue.

VMware vCenter scanning troubleshooting

  • Make sure there is no general scanning issue by going through the steps in this KB article. After double-checking all the items in the aforementioned article, rescan your vCenter server.
  • Use the Lansweeper device tester to make sure that the vCenter server meets the vCenter scanning requirements. Check that TCP port 443 is opened on the vCenter server and that the HTTPS title contains the text "ID_VC_Welcome".
    checking the tcp port
    checking the HTTPS title
  • Make sure that the machine is a vCenter Server Appliance (vCSA) and that TCP ports 135, 139 and 445 are closed on the vCenter server.
    Scanning a vCenter Server environment installed as software on a Windows computer is not supported. If Lansweeper determines a machine to be a Windows computer, vCenter scanning is skipped.
  • Check connectivity from your Lansweeper scanning server to the vCenter server using a Telnet connection. Open a command prompt on the Lansweeper scanning server as administrator. Telnet to the IP address of the vCenter server in question on port 443 and check if a connection can be made. See example command below.
    telnet 443

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