The original article addresses the error (1326) Logon failure: unknown user name or bad password when opening the Plesk file manager. It attributes the problem to damaged system-user information for a hosting account.
It gives the following repair commands for the Plesk version described at the time.
For one webspace
"%plesk_cli%\repair" --repair-webspace-system-users -webspace-name <webspace-name>
For all webspaces
"%plesk_cli%\repair" --repair-all-webspaces-system-users
This article was originally published in Turkish on and has been migrated from our previous website. This English version is a translation of the original article. The content may reflect information from that time.