Symptoms

The following appears when you click manage add-ons:

Caused by: Java.lang. NoClassDefFoundError: com/atlassian/oauth/util/RequestAnnotations
at coms.atlassian.sal.confluence.websudo.ConfluenceWebsudoManager.canExecuteRequest(confluencewebsudomanager:java:45)

Diagnosis

It happens when you are using Tomcat 7.

Cause

Tomcat 7 is not stable in Confluence 5.5 prior to 5.5.3.

Resolution

• Downgrade your Tomcat to a supported version such as Tomcat 6. After downgrading Tomcat, Confluence User Directories link should appear within the Confluence admin panel.

  To downgrade Tomcat:

  1. Shutdown Confluence
  2. Download a compatible version of Tomcat and unzip it
  3. Copy the bin and lib folder from the unzipped folder into the <confluence install directory>
  4. Agree to overwriting all duplicate files
  5. Start Confluence