Magento 404 error on new extension installation

Modified on Mon, 13 Mar 2023 at 05:10 PM

It is a very common error that shows in Magento when you install a new extension with system.xml configuration. When you go to the System > Configuration > Extension tab, a 404 error is shown. You need to flush Magento cache Admin > System > Cache management > Flush Magento Cache, then log out and log in again and then it will be okay.

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