Article ID: 116901, created on Aug 23, 2013, last review on Jun 17, 2016

  • Applies to:
  • Plesk 11.0 for Linux
  • Plesk 11.5 for Linux
  • Plesk 11.0 for Windows
  • Plesk 11.5 for Windows
  • Plesk 10.4 for Windows
  • Plesk 10.3 for Windows


Parallels Plesk shows the following error:

xmlrpc error: Expected <param> to have 1 children, found 0
---------------------- Debug Info -------------------------------
0: common_func.php3:4675
1: common_func.php3:4675
2: KeyInfoForm.php:171
        KeyInfoForm->get_bye_online_url(string 'new', string '')
3: KeyInfoForm.php:77
4: key_info.php:43
        require(string 'C:\Program Files\Parallels\Plesk\admin\htdocs\server\key_info.php')
5: plesk.php:66


The file %plesk_dir%\admin\repository\registry.xml is empty.


  1. Remove the file %plesk_dir%\admin\repository\registry.xml.

  2. Click the OK button on the error screen or log into the Plesk Control Panel again.

  3. Click the Retrieve Keys button on the License Management screen to re-apply the license.

Search Words

Errors after login

License has expired unexpectedly and I cannot install the license

Error: The license key is invalid

xmlrpc error: Expected <param> to have 1 children, found 0

I cannot install the license

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Unable to access Plesk control panel

Plesk blank

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update 9.5 to 11.5

plesk license key uploading issue

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