If a vCenter Server instance appears as disconnected, or if you modified the connection settings, you can try to reset the connection.
Note: During establishing the new connection, the vCenter Server instance is unavailable for operations.
- From the top navigation bar, under Resources, click Infrastructure Resources.
- In the left panel, select vCenter Server Instances.
- Click the radio button next to the name of the target vCenter Server instance, and click Reconnect.
- To confirm, click OK.