What is the virtual switch the VM connects to? Please open Virtual switch manager, check if the virtual switch is in good state, pleasek provide the screenshot of the virtual switch.
If it is an external virtual switch, please check if the network adapter driver is up to date, if not, please update the NIC driver.
After updating the NIC driver, please delete the external virtual switch and recreate it, check if it could work.
Besides, please try to disconnect the VM to the virtual switch, then start the VM, check if the VM can be started.
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I have also downloaded the latest network (ethernet and wireless) drivers from the Intel website however this has not resolved the issue. The machine is a Lenovo ThinkPad L590 in case this issue is related to specific hardware. Even with the network adpater set to the default switch the VM's fails to start.
If I add a legacy network adapter to one of my Generation 1 VMs I immediately get the following error message on startup:
Can anyone please provide any suggestions as to what is causing this issue?