Cannot install a license: The operation you were performing failed

Symptoms

• When trying to install a new license key Plesk shows the following error:

  The operation you were performing failed. You can retry the operation with or without changing its parameters. You may also want to report this problem to our support so that we could help you as soon as possible.
  

• The following can be found in "%plesk_dir%"\admin\logs\php_error.log :

  ERR [panel] Exception: Access is denied.
  
  file: C:\Program Files (x86)\Parallels\Plesk\admin\plib\Lock\Manager\Hierarchical.php
  
  line: 114
  
  code: 0
  
  trace: #0 C:\Program Files (x86)\Parallels\Plesk\admin\plib\Lock\Manager\Hierarchical.php(114): LockManagerClient->__construct()
  
  #1 C:\Program Files (x86)\Parallels\Plesk\admin\plib\Lock\Manager\Hierarchical.php(193): Plesk\Lock\Manager_Hierarchical->_getClient()
  
  #2 C:\Program Files (x86)\Parallels\Plesk\admin\plib\Lock\Manager\Hierarchical.php(155): Plesk\Lock\Manager_Hierarchical->_applyLock(string '', object of type Plesk\Lock\Resource)
  
  #3 C:\Program Files (x86)\Parallels\Plesk\admin\plib\Lock\Manager.php(83): Plesk\Lock\Manager_Hierarchical->lock(object of type Plesk\Lock\Resource, string '')
  
  #4 C:\Program Files (x86)\Parallels\Plesk\admin\plib\Lock.php(34): Plesk\Lock\Manager->lock(integer '1', array, string '', array)
  
  #5 C:\Program Files (x86)\Parallels\Plesk\admin\htdocs\server\key_upload.php(28): Plesk\Lock::write(object of type Plesk\Lock\Object_Service, string '', array)
  

Cause

Incorrect permissions.

Resolution

Run Plesk Reconfigurator with the following options:

Repair Plesk installation >

        Plesk Server Accounts

        Plesk File Security

        Plesk Services

        Plesk Database