Symptom:
- Settings on vSwitches can not be changed
- Error in logs: "A specified parameter was not correct" and others
- You can not add Portgroups or change/add uplinks
Reason:
- In ESXI 7 (and eventually also 8) when removing additional uplinks from virtual switches and portgroup settings, unhealthy configuration parts are staying in the ConfigStorage
Proof:
- Enable Shell and enter "esxcfg-vswitch -B both [YOUR PROBLEM-SWITCH-NAME"