Confluence Will Not Update or Install Add-ons
Symptoms
Confluence starts and seems to operate normally except when trying to install or update add-ons.
The following appears in the atlassian-confluence.log:
ERROR [ThreadPoolAsyncTaskExecutor::Thread 8] [plugin.osgi.factory.OsgiPlugin] onPluginContainerFailed Unable to start the plugin container for plugin com.atlassian.activeobjects.activeobjects-plugin
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'handler' defined in URL [bundle://29.0:0/META-INF/spring/web-context.xml]: Initialization of bean failed; nested exception is java.lang.NoClassDefFoundError: javax/servlet/ServletContext Cause
This is caused by incompatibility with Tomcat 7. Please make sure your Confluence version is using Supported Platforms.
Resolution
Install Apache Tomcat 6, or use the Atlassian supplied 'std' or standalone version of Confluence
Last modified on Mar 30, 2016
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