No valid license found, LicenseManager returned null

[Bettina Rosmarino]

I'm getting this error message in Confluence, but there is no way to update the license key:

Your license details could not be updated because the license you entered is invalid. Reason: No valid license found, LicenseManager returned null

This and my server ID are the only thing displaying on the webpage, no link to fix it. help!

[Bettina Rosmarino]

Figured it out: just rename confluence.cfg.xml to .bak or something and then restart browser instance and Confluence and you are back to the Confluence Setup Wizard to enter license again.