Knowledge Base

Plesk is not available: Logon failure: the user has not been granted the requested logon type at this computer or Error 503. The service is unavailable

When loading the Plesk URL – https://203.0.113.2:8443/, the following error message is displayed:

PLESK_ERROR: ERROR: ExceptionUnable to logon user (VPS-2222Plesk Administrator): (1385) Logon failure: the user has not been granted the requested logon type at this computer.0: common_func.php3:4147 plesk_internal_file_exists(string ‘C:ParallelsPlesk/admin/plib/locales/en-US/messages_en-US.php’)1: common_func.php3:4147 plesk_file_exists(string ‘C:ParallelsPlesk/admin/plib/locales/en-US/messages_en-US.php’)2: LocaleManager.php:94 LocaleManager::_locale_file_exists(string ‘C:ParallelsPlesk/admin/plib/locales/en-US/messages_en-US.php’)3: LocaleManager.php:87 LocaleManager::locale_exists(string ‘en-US’)4: common_func.php3:2026 locale_exists(string ‘en-US’)5: clas…