How do I change a user's username in Confluence?

Question

I've searched through the forums for an up-to-date response to this question, but have come up empty-handed.  As an admin, how do I change a user's username?  I've navigated to the user's profile and clicked Edit Details, but the username field isn't showing as editable.  Any ideas?

unknown · Answer

I'm using Version 5.1.5 so I'll take a look at what Boris posted.

unknown · Answer

After clicking Administer User, the username is not editable (1st screenshot).  Also, if I click Edit Details, the username is still not editable (2nd screenshot)

Tim · Answer

What Confluence version are you using? The username can only be changed in Confluence 5.3 or later. If you use a version before 5.3, you have to follow the guidelines in the second link Boris posted above.