If you have setup Confluence to:

• delegate user management to JIRA (as per our documentation here) or
• use LDAP/Active directcory authentication (as per our documentation here)

Then you will need to make the following changes to your osuser.xml file:

1. replace

   com.atlassian.confluence.user.providers.Caching

   with

   bucket.user.providers.Caching

   
   Doing this will effectively convert the following:

   com.atlassian.confluence.user.providers.CachingCredentialsProvider
   com.atlassian.confluence.user.providers.CachingAccessProvider
   com.atlassian.confluence.user.providers.CachingProfileProvider

   to

   bucket.user.providers.CachingCredentialsProvider
   bucket.user.providers.CachingAccessProvider
   bucket.user.providers.CachingProfileProvider

2. and replace

   com.atlassian.confluence.user.ConfluenceHibernateConfigProvider

   with

   bucket.user.BucketHibernateConfigProvider

Alternatively

You can just reconfigure the new osuser.xml with your changes.