Informational

Reboot the FMC. You will then see a red LILO boot menu. Press any key to interrupt the boot sequence. At the prompt, type the version of the FMC (6.3.0 in my case) followed by ‘single’ and hit return.

boot: 6.3.0 single

Once the FMC boots up into single user mode, you should see the # prompt, proceed to type passwd admin to bring up the reset password prompt for the Admin user. Enter a new password and then again for confirmation.

bash-3.2# passwd admin

Once your new password is set, you must then reboot the FMC again. Let it boot normally this time and do not interrupt like you did previously, once at the login prompt you should then be able to login using the newly set password.

At the prompt enter sudo usertool.pl -p ‘admin password’ (where password is the new password) like the below.

admin@FMC:~$ sudo usertool.pl -p 'admin cisco'
Password:
admin@FMC:~$

Now go back to the web GUI and login using your new password.