HALF-DUPLEX issues while installing Unified Communication Suites on VMWARE ESXi

If you get a half-duplex mismatch error on the switch with you CUCM/CUCX/Unity/etc running on VMWARE ESXi, all you gotta do is
1. Turn off the VMachine.
2. Go to “Edit-Setting”.

3. Choose network card option and then click on Remove to get rid of the E1000 Virtual network adapter.

4. Click on ADD and then add a new E1000 network adapator.
This should solve your duplex mismatch issue.