Currently, the only way I am aware of for disabling this notification is to actually disable the vCenter Server Life-Cycle Manager Remote Plugin itself. You can do this by navigating to Administration->Solutions->Client Plugins and then selecting "vCenter Server Life-cycle Manager" and click on the Disable button. You can refresh the webpage or logout and you should no longer see the notification banner.
禁用 vCenter Server 更新通知横幅¶
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原英文标题：References