I have completed an upgrade to my esx enviroment and all looks well apart from being unable to create virtual switches via vCenter but I can do it via the service console, any ideas?
I get error message " A specified parameter was not correct"
you could try to disconnect or remove a host from vCenter and reconnect again. Maybe it is an authentication problem with the "vpxuser" account which will be used for communication between ESX and vCenter.
Ensure you're posting in the right forums (public vs private) based on your topics, this may not be the appropriate area.
VMware vExpert 2009
If you find this information useful, please award points for "correct" or "helpful".
Have you checked that your VC is licensed? Perhaps your eval license has expired - or been reset somehow in the upgrade?
Alternatively, as stated before disconnect and reconnect the host . . .
Make sure that you verify all the DNS config / hosts files for your ESX environment too.