Problem

When starting an upgrade of Confluence, it redirects you to an error page that further redirects you to the URL below:

http://<base_url>/fixonly/fixlicense.action

Inputting the license on this page does not resolve the licensing conflict or allow you to proceed with the install.

Also, the following stack trace may appear in the atlassian-confluence.log:

Caused by: com.atlassian.confluence.license.exception.MissingConfluenceLicenseValidationException: The given license is missing Confluence.

Cause

• The license the server is currently using is out of date or invalid
• The current license is using a different serverID than the new license, and fixlicense.action is unable to resolve this conflict.

Resolution

• You will need to manually change the license, which can be done by following the instructions found at How to change the Confluence License in confluence.cfg.xml file