Webmail login failed on cPanel
When you get the error login failed because of invalid username and password (horde, roundcube, squirrelmail)
Run the following commands.
#rm -f /etc/userdomains
[# /usr/local/cpanel/scripts/updateuserdomains –force
Now restart the cPanel service.
#/etc/init.d/cpanel restart
The webmail login error with cPanel should be fixed now.