The PluginWrapperAdministrativeMonitor displays error in *Manage Jenkins* when a plugin cannot be loaded because of dependencies issues:

However after fixing these dependencies / installing the plugin with the required dependencies the warning remains.

Jenkins needs to be restarted to get rid of this message.

Example:

I install the ws-cleanup plugin but my update center does not advertise the resource-disposer plugin. The plugin fails to deploy dynamically because it lacks a dependency. The administrative monitor is activated:

I now advertise the resource-disposer plugin in my update center and install the ws-cleanup again. It nows deploy successfully:

However the warning is still displayed:

Code

The PluginWrapperAdministrativeMonitor is only updated when dependency errors are found: https://github.com/jenkinsci/jenkins/blob/jenkins-2.73.2/core/src/main/java/hudson/PluginWrapper.java#L615-L627