What platform are you using for your virtual environment? If the VMs are Windows, consider deploying LSPush or LSAgent to them directly. Linux is supported by LSAgent as well, I don't think LSPush is but I could be wrong. If they are linux, I would simply consider SSH Creds for Lansweeper to leverage. If vSphere, leverage credentials for Lansweeper to log into the environment at a high level. Could also be a connectivity issue where the VMs are not able to communicate with the Scan Server due to routing or firewall changes. More information would certainly be needed to further diagnose.
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