Upload failed despite having custom php.ini

Issue :

A 5 MB file cannot be uploaded via cPanel’s File Manager even though there is a custom php.ini in place with upload_max_filesize and post_max_size set to 10 MB.

Solution :

To alter the maximum file size for files uploaded via cPanel’s File Manager, you must use the following Tweak Setting in WHM:

WHM >> Tweak Settings >> System
The maximum file size in MB allowed for upload through cPanel File manager. Use “unlimited” for unlimited

Note: upload_max_filesize and post_max_size in php.ini are different.