How to Fix phpMyAdmin 500 Error When Importing Large SQL Files on Laragon
A developer using Laragon on Windows encountered an HTTP 500 error while trying to import a 97 MB SQL file through phpMyAdmin, with no meaningful error message displayed. After inspecting Apache and PHP error logs, the root cause was identified as a FastCGI request size limit set in fcgid.conf, which was capped at around 77.5 MB — well below the file size. The fix involved increasing the FcgidMaxRequestLen value in the Laragon Apache configuration to 512 MB to match PHP's own upload limit. A secondary issue — a 300-second execution timeout — was resolved by setting ExecTimeLimit to 0 in phpMyAdmin's config.inc.php file. Restarting Laragon after each configuration change is required for the settings to take effect.
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