If you’re like me, you connect to many different environments at customer sites and your vSphere Client drop-down get’s fairly extensive and cluttered with the old connections you will no longer use.
If you want to get rid of them, break out your trusty registry editor and go to work.
Navigate to HKCU\Software\VMware\VMware Infrastructure Client\Preferences
Edit the RecentConnections string and remove any unneeded addresses.
Now fire up the vSphere client and you should only see the current connections.