Admin told me we do not use Umbrella, so is there any way to remove this warning or disable the umbrella function?
-The umbrella module is an independent AnyConnect module that gets installed on top of the AC secure mobility client. If it is not being used you should be able to simply uninstall it. Without further detail, is it possible that it is configured to get deployed via ASA or ISE via webdeploy? If so, the admin should have the ability to change that. HTH!