Unable to log in to Plesk or upload files via Plesk File Manager: The file is too big

Symptoms

• When logging in to Plesk, Plesk login page is returned in a web browser without any errors or warnings.

• When uploading a file via Plesk File Manager, one of the following error messages appears:

  PLESK_ERROR: The file "picture.jpg" is too big. Try to upload this file via FTP.

  ---

  PLESK_ERROR: No upload response

• Extension update fails:

  PLESK_INFO: An error has occurred uploading this file to the server.
  The maximum allowed size of PHP to upload files is too low: This is configured from the PHP directives 'upload_max_filesize' and 'post_max_size' (locatable and configurable in your file 'php.ini' or '.htaccess').
  Unable to find the installation package

• In some cases, the following error messages is logged in /usr/local/psa/admin/logs/panel.log:

  CONFIG_TEXT: PHP Warning: POST Content-Length of 90378782 bytes exceeds the limit of 67108864 bytes in Unknown on line 0
  ERR (3) [panel]: Forgery protection token check failed.
  ERR (3) [panel]: Permission denied.#0

Cause

Low values of directives post_max_size and upload_max_filesize are specified in Plesk php.ini.

Resolution

1. Connect to your Plesk server via SSH.

2. Open the file /usr/local/psa/admin/conf/php.ini in a text editor. In this example, we are using vi editor:

   # vi /usr/local/psa/admin/conf/php.ini

3. Specify higher limits for post_max_size and upload_max_file directives in bytes:

   Note: The default value is 2147483647 (2GB):

   CONFIG_TEXT: post_max_size = 2147483647
   upload_max_filesize = 2147483647

4. Save the changes and close the file.

5. Restart Plesk services:

   # service sw-cp-server restart && service sw-engine restart

6. Log out from Plesk and log in again to apply the changes.