I restarted Jenkins and got the following log:
Jenkins Log
Jul 26, 2018 3:32:43 PM INFO org.eclipse.jetty.server.handler.ContextHandler doStart
Started w.@1ecda92{/,file:///C:/Programme/Jenkins/war/,AVAILABLE}
{C:\Programme\Jenkins\war}
Jul 26, 2018 3:32:43 PM INFO org.eclipse.jetty.server.AbstractConnector doStart
Started ServerConnector@1504ae9{HTTP/1.1,[http/1.1]}
{0.0.0.0:8081}
Jul 26, 2018 3:32:43 PM INFO org.eclipse.jetty.server.Server doStart
Started @3032ms
Jul 26, 2018 3:32:43 PM INFO winstone.Logger logInternal
Winstone Servlet Engine v4.0 running: controlPort=disabled
Jul 26, 2018 3:32:46 PM INFO jenkins.InitReactorRunner$1 onAttained
Started initialization
Jul 26, 2018 3:32:48 PM INFO jenkins.InitReactorRunner$1 onAttained
Listed all plugins
Jul 26, 2018 3:32:59 PM INFO jenkins.InitReactorRunner$1 onAttained
Prepared all plugins
Jul 26, 2018 3:32:59 PM INFO jenkins.InitReactorRunner$1 onAttained
Started all plugins
Jul 26, 2018 3:33:00 PM INFO hudson.ExtensionFinder$GuiceFinder$FaultTolerantScope$1 error
Failed to instantiate optional component hudson.plugins.build_timeout.operations.AbortAndRestartOperation$DescriptorImpl; skipping
Jul 26, 2018 3:33:01 PM INFO jenkins.InitReactorRunner$1 onAttained
Augmented all extensions
Jul 26, 2018 3:33:01 PM INFO jenkins.model.Jenkins setBuildsAndWorkspacesDir
Using non default workspaces directories: ${JENKINS_HOME}/workspace/${ITEM_FULLNAME}.
Jul 26, 2018 3:33:02 PM INFO jenkins.InitReactorRunner$1 onAttained
Loaded all jobs
Jul 26, 2018 3:33:02 PM INFO hudson.model.AsyncPeriodicWork$1 run
Started Download metadata
Jul 26, 2018 3:33:02 PM INFO hudson.model.AsyncPeriodicWork$1 run
Finished Download metadata. 16 ms
Jul 26, 2018 3:33:02 PM INFO org.springframework.context.support.AbstractApplicationContext prepareRefresh
Refreshing org.springframework.web.context.support.StaticWebApplicationContext@1a250db: display name [Root WebApplicationContext]; startup date [Thu Jul 26 15:33:02 CEST 2018]; root of context hierarchy
Jul 26, 2018 3:33:02 PM INFO org.springframework.context.support.AbstractApplicationContext obtainFreshBeanFactory
Bean factory for application context [org.springframework.web.context.support.StaticWebApplicationContext@1a250db]: org.springframework.beans.factory.support.DefaultListableBeanFactory@1c61fa4
Jul 26, 2018 3:33:02 PM INFO org.springframework.beans.factory.support.DefaultListableBeanFactory preInstantiateSingletons
Pre-instantiating singletons in org.springframework.beans.factory.support.DefaultListableBeanFactory@1c61fa4: defining beans [authenticationManager]; root of factory hierarchy
Jul 26, 2018 3:33:02 PM INFO org.springframework.context.support.AbstractApplicationContext prepareRefresh
Refreshing org.springframework.web.context.support.StaticWebApplicationContext@18514b2: display name [Root WebApplicationContext]; startup date [Thu Jul 26 15:33:02 CEST 2018]; root of context hierarchy
Jul 26, 2018 3:33:02 PM INFO org.springframework.context.support.AbstractApplicationContext obtainFreshBeanFactory
Bean factory for application context [org.springframework.web.context.support.StaticWebApplicationContext@18514b2]: org.springframework.beans.factory.support.DefaultListableBeanFactory@1484160
Jul 26, 2018 3:33:02 PM INFO org.springframework.beans.factory.support.DefaultListableBeanFactory preInstantiateSingletons
Pre-instantiating singletons in org.springframework.beans.factory.support.DefaultListableBeanFactory@1484160: defining beans [filter,legacy]; root of factory hierarchy
Jul 26, 2018 3:33:02 PM INFO jenkins.InitReactorRunner$1 onAttained
Completed initialization
Jul 26, 2018 3:33:02 PM INFO hudson.WebAppMain$3 run
Jenkins is fully up and running
Jul 26, 2018 3:33:05 PM WARNING jenkins.security.ClassFilterImpl notifyRejected
com.hp.alm.ali.hudson.coverage.salesforce.AliSalesforceCoverageExtension$SalesforceConfig in file:/C:/Programme/Jenkins/plugins/ali-hudson-plugin/WEB-INF/lib/ali-hudson-common-2.32-495.jar might be dangerous, so rejecting; see https://jenkins.io/redirect/class-filter/
floriane, Did you receive this error by using the HPE Application Automation Plugin?
If so please provide a full log message because com.hp.alm.ali.hudson.coverage.salesforce is not a plugin component.