Website is not accessible: 500.19 - Internal Server Error

Created:

2016-11-16 12:43:33 UTC

Modified:

2017-04-24 12:13:57 UTC

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Website is not accessible: 500.19 - Internal Server Error

Applicable to:

  • Plesk 12.5 for Windows

Symptoms

  • Unable to access the website the follownig error occurs:

    The page can not be displayed because an internal server error.
  • The following error is shown when Detailed errors option is chosen in IIS:

    HTTP Error 500.19 - Internal Server Error.
    The requested page cannot be accessed because the related configuration data for the page is invalid.
    Detailed Error Information: Module CustomErrorModule
    Notification SendResponse
    Handler PHP-php
    Error Code 0x80070021
    Config Error Lock violation
    Config File \\\\?\\C:\\Inetpub\\vhosts\\example.com\\httpdocs\\web.config
    Requested URL http://www.example:80/index.php/
    Physical Path C:\\Inetpub\\vhosts\\example.com\\httpdocs\\index.php\\
    Logon Method Anonymous
    Logon User Anonymous
    Config Source:
    4: <httpErrors>
    5: <clear />
    6: <error statusCode="400" path="C:\\Inetpub\\vhosts\\example.com\\error_docs\\bad_request.html" />

Cause

Website's web.config file contains information about invalid or wrongly configured custom errors.

Resolution

  1. Create a backup of web.config file.

  2. Remove/comment all lines that error is referring to from web.config .

  3. Check if website is accessible now.

  4. If the error still persists and shows different lines, repeat from step #2.

Custom website configuration should be reviewed and fixed by a system administrator or a web-developer.

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