Step 1: To reset your password in CF MX, go to C:\CFusionMX\lib where C is your installation drive.
Then find the file neo-security.xml and you are going to have to edit
the code in this document. look for the line
<var name=”admin.security.enabled”>
<boolean value=”true” />
</var>
then change the boolean value from true to false. Restart the
ColdFusion Server. You should now be able to change your password. If you
can’t, you can go directly to the page:
http://localhost/CFIDE/administrator/security/cfadminpassword.cfm
Step 2: This step is to reset the password for ColdFusion for
version 5 or earlier. Edit the registry (regedit.exe) and
go to this key: HKEY_LOCAL_MACHINE then go to Software then to Allaire
then ColdFusion then Current Version then Server. Now find the UseAdminPassword
attribute and set it to 0. Now restart your ColdFusion Server and go to the
main page and you should be able to log in with a blank password. If not
navigate to the page directly which is: