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WordPress website in Plesk shows 500 Internal Server Error on Windows: open_basedir restriction in effect: .mo is not within the allowed path(s)

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Renan Genova Ferreira
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Plesk for Windows kb: technical ABT: Group B

Applicable to:

  • Plesk for Windows

Symptoms

  • Website on WordPress is unavailable:

    PLESK_INFO: 500 Internal server error

  • Accessing this website from the server returns the following error message:

    PLESK_INFO: PHP Warning: is_readable(): open_basedir restriction in effect. File(C:\inetpub\vhosts\example.com\httpdocs/wp-content/plugins/C:/inetpub/vhosts/example.com/httpdocs/wp-content/themes/sometheme/plugins/tf-flexslider/lang/en_US.mo) is not within the allowed path(s): (C:/inetpub/vhosts//example.com\;C:\Windows\Temp\) in C:\inetpub\vhosts\example.com\httpdocs\wp-includes\l10n.php on line 457

    The website may be accessible but an attempt to install a plugin at Plesk > WordPress > example.com > Plugins fails with the same error above.

Cause

The absolute path to the WordPress theme localization .mo file is concatenated with the path to the plugin directory and, as a result, restricted by open_basedir PHP parameter.

Resolution

Note: the resolution contains a common suggestion on addressing such issues. The case may be different for different themes and plugins. For the exact specific solution, refer to plugin support page or contact plugin developers.

  1. Log into Plesk.

  2. Access file manager in Domains > example.com > File Manager.

  3. Edit the file, mentioned in the error, e.g. httpdocs\wp-includes\l10n.php.

  4. Find WP_PLUGIN_DIR and replace it with basename( dirname( __FILE__ ) ).

    For example, replace:

    CONFIG_TEXT: $path = WP_PLUGIN_DIR . '/' . trim( $plugin_rel_path, '/' );

    With:

    CONFIG_TEXT: $path = basename( dirname( __FILE__ ) );

  5. Save changes.

Additional information

Domain does not work: open_basedir restriction in effect

Comments

5 comments

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  • Avatar
    Joseph Anand 
    I have the same error in stylemixtheme activate. I tried as your resolution but unable to fix this issue. Could you tell me how to solve the issue?

    The error as

    PHP Warning:  is_readable(): open_basedir restriction in effect. File(G:\PleskVhosts\globalmastersdoc.com\httpdocs\TaseesDemo/wp-content/plugins/G:/PleskVhosts/globalmastersdoc.com/httpdocs/TaseesDemo/wp-content/themes/consulting/admin/includes/envato-market/languages/envato-market-en_US.mo) is not within the allowed path(s): (G:/PleskVhosts//globalmastersdoc.com\;C:\Windows\Temp\) in G:\PleskVhosts\globalmastersdoc.com\httpdocs\TaseesDemo\wp-includes\l10n.php on line 584
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  • Avatar
    Joseph Anand

    Solved. First I have changed only open_basedir in Domain > example.com > PHP Settings. Now I I have Changed the open_basedir parameter in my .user.php also like  open_basedir="none"

     

    Now it is working fine

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  • Avatar
    Denis Bykov

    @Joseph Anand
    Thank you for the feedback. I added notice about '    .user.ini' file to the article.

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    Unknown User

    Thanks Joseph Anand! Its working!!

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  • Avatar
    Marilynne Botha

    Hi, so I am having the same issue:

    [22-Jul-2022 06:51:08 UTC] PHP Warning:  file_exists(): open_basedir restriction in effect. File(C:\inetpub\vhosts\.../wp-admin/admin.php) is not within the allowed path(s): (C:/Inetpub/vhosts/...;C:\windows\Temp\) in C:\inetpub\vhosts\...\httpdocs\wp-admin\menu-header.php on line 257

    I have done quite a few Wordpress sites, but this is the first time I have had this problem on any of them, but it is also the first client using plesk.

    What exactly am I supposed to do?

    I went to menu-header.php on line 257:

    && file_exists( WP_PLUGIN_DIR . "/$sub_file" )

    I am not exactly sure what I need to change. Please advise on what I need to change?

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