Article ID: 113760, created on Apr 25, 2012, last review on May 11, 2014

  • Applies to:
  • Plesk for Linux/Unix


Customer cannot change property of his domain. Any domain modification fails with the error:

Error: system user update is failed: Unable to execute usermng: usermng: PAM password change failed: 20, Authentication token manipulation error System error 111: Connection refused usermng: Failed to set password for user 'user_name' System error 111: Connection refused


This error is caused by system misconfiguration. Record  for the domain FTP user is missed in the file /etc/shadow.


Check if the record about domain FTP user exists in the files /etc/passwd and /etc/shadow.
# grep ftpuser /etc/passwd
ftpuser x:10001:2523::/var/www/vhosts/domain.tld:/bin/false
# grep ftpuser /etc/shadow

Use the domain FTP user name instead of ftpuser.

Missed entry on the file /etc/shadow can be fixed with the utility pwconv.
# pwconv

This utility creates shadow from passwd. Missed record for user should be created. 
# grep ftpuser /etc/shadow

29d1e90fd304f01e6420fbe60f66f838 a914db3fdc7a53ddcfd1b2db8f5a1b9c 56797cefb1efc9130f7c48a7d1db0f0c

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