When trying to manage your vSphere environment using the web client (or forced to in 6.5+), the Web Client Integration plugin is required to make use of many features the web client has to offer, like remote console, enhanced authentication, and deploying OVF appliances.
If you have downloaded and installed the plugin, but IE, Chrome, or Firefox do not activate the plugin, it can most likely be resolved by doing one of the following:
- Add the vCenter FQDN to the trusted site list:
For vSphere 6.0-6.5: https://vCenter_FQDN
For vSphere 5.5: https://vCenter_FQDN:9443
- Add the vCenter FQDN to the Local Intranet list (IE & Chrome)
- Uninstall Plugin, Clear Cache/Cookies, Reinstall Plugin, and Repeat option 1
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