Magento online store custom admin URL error fix

[Taang Sianpu]

It is frustrating and troublesome enough to be a web developer sometimes especially when you’re working with database.

I’ve tried to change the custom admin login of Magento shopping cart configuration.
However, it turn out that I was unable to login again after saving the config file from and admin panel. Troubleshooting around from
phpMyAdmin won’t really help much until I spent quite a number of hours
researching about the issue and finally found out the fix. I’m sharing
this because there could be some other people out there who have the
same problem in Magento custom admin error.

It takes only takes 2 steps.

1. In phpmyadmin find core_config_data and on its last page deleted the entire fields not just the data in them:
admin/url/use_custom
admin/url/custom
web/secure/base_url
web/unsecure/base_url

2.In /public_html/var/cache/ delete all the folders:
mage–0/1 through mage–f

I can’t believe it but working a 100% fine after all the fixes.

Caution: Backup your database before doing this in case you may need it if could accidentally make mistake like me LOL.

Hope it helps for some frustrating web developers of Magento