Hi@akhtar,
There may be lots of reason behind this. Follow the bellow given steps to troubleshoot your network issue.
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Remove your network adapter and re-add it in your VM settings.
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Run systemctl restart network
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Run systemctl restart NetworkManager
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Run nmcli connection up 'adapter name'
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If eth0 doesn’t show any IPv4 addresses yet, run dhclient.
If all the steps will not work, then reboot your system.