Cant save configuration in backend

Question

When I edit something in system -> configuration, it doesn't matter where, for example i want to edit the store contact address, it doesnt save my edit.

I can change and add products but I cant edit anything in the configuration.

The System log and exception log are empty and no errors are shown. Is says "The configuration has been saved."

Does someone know how to fix this.

Magento version: 1.9.3.6

EDIT: I have noticed that this problem has occurred when we applied patch SUPEE 11219 When i revert that patch we can save config in the backend again. Any idea?

Answer 1

You need to check "max_input_vars" in your php configuration. Try to increase "max_input_vars" value and test.

ini_set('max_input_vars','5000' );

You need to set it with php.ini or .htaccess file.

Answer 2

navigate to

app/code/core/Mage/Core/etc/config.xml

Find

<log>
    <active>0</active>
    <file>system.log</file>
    <exception_file>exception.log</exception_file>
</log>

Replace

<log>
    <active>1</active>
    <file>system.log</file>
    <exception_file>exception.log</exception_file>
</log>

Note: this is not a solution this will help you in getting the error then once you know the error kindly update the question with the error details

Answer 3

In your magento root folder, there is index.php file, In that file the code like this one

if (isset($_SERVER['MAGE_IS_DEVELOPER_MODE'])) {
    Mage::setIsDeveloperMode(true);
}

#ini_set('display_errors', 1);

Form that code, remove the # from this line :

ini_set('display_errors', 1);

So your code look like this one:

if (isset($_SERVER['MAGE_IS_DEVELOPER_MODE'])) {
        Mage::setIsDeveloperMode(true);
    }
    
ini_set('display_errors', 1);

Now open the admin and try to save the config, this will show real error if there anythnig.