How to remove recent connections from the vSphere Client vSphere Client. IP address or Name from from drop down list.
type or select Run ,
type regedit, and click OK and navigate to this path below.
Navigate to HKEY_CURRENT_USERSoftwareVMwareVMware Infrastructure ClientPreferences, right-click RecentConnections, export it as a backup. Then right-click RecentConnections and choose Modify.
Delete any appropriate entries, and click OK.
Note: (1) You can optionally search using the IP address of the connection, instaed of navigating to the path above.
(2) The sub-key HKEY_USERS<subkey for profile actively loaded on machine>SoftwareVMwareVMware Infrastructure ClientPreferences. reflects any changes you make to HKEY_CURRENT_USERSoftwareVMwareVMware Infrastructure ClientPreferences.
Reference Link: https://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=1032988