Welcome to Cisco Support Community. We would love to have your feedback.
For an introduction to the new site, click here. And see here for current known issues.
Is it possible to do password recovery on AIR-WLC4402-12-K9. HTTP/HTTPS login credential is lost.
The easiest way to recover or change the password is to use WCS to manage the controller. Once in WCS you can fully manage the WLC.
You have a couple options other the SNMP. You can default the controller from the boot menu (hit escape when prompted during the boot) or depending on the version you are running you might be able to add a new read/write account to the controller.
If he reloads the box he'll lose all his configuration settings. I wouldn't suggest that.
HTTP/HTTPS login credential is lost.
What about CLI?
Are you trying to do a password recovery of the Admin account or a specific guest/user account?