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Common Causes of 500 Errors

For Linux packages.

500 Errors are commonly produced when there are errors in the .htaccess file or one of the package limitations has been exceeded.

Use the table below to find the limitations of your package:

Basic Package Unlimited Package Unlimited Plus Package
Max script execution time 20 seconds 40 seconds 60 seconds
Max simultaneous processes 10 15 16
Max memory per process 60MB 80MB 128MB

It is common to experience 500 errors intermittently when the package limitations have been exceeded which may correspond to swells in traffic during the day.

When there is an error with a .htaccess file, all pages of the website will display a 500 error indefinitely until the .htaccess file is corrected or removed. As little as a simple spelling mistake or syntax error will cause a 500 error. If the .htaccess file has been edited recently, replace the file with a backup. If no backup is available, try to undo the changes to the file if you can remember what has been altered. If those options are not feasible, you can try commenting lines one by one by placing a pound sign(#) at the beginning of the line to comment it out. Then try to access a page of the site. Continue to add the pound sign to more lines until the 500 error stops which should help you pinpoint which line needs to be corrected.

For additional information, you may want to reference: