I have same issue as same as https://community.magento.com/t5/Installing-Magento-2-x/Installing-Magento-2-Installation-Problem-in-Magento/td-p/42036 i already tried Locate the max_execution_time setting. Change its value to 18000. tried stop httpd and start httpd.. still the same, it stopped at Installing... 66% ==== Module 'Magento_ConfigurableSampleData': Installing data... ==== already wait for 20 mins..... any idea to fix it ?
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Looks like you have only increase max_execution_time , but you actually need to increase memory_limit as well !
Generally this kind of issue occurs when max_input_time and memory_limit is not set properly, below is the configuration which is needed !
In your php.ini file increase values of below parameters.
Note : Make sure you increase max_input_time value to at least 1800 and it will works !!