Unable to update or upgrade Plesk: Plesk version file is not exists

Symptoms

• Update/upgrade Plesk via GUI/CLI fails due to the next error:

  PLESK_ERROR: FEHLER: Der angegebene Registrierungsschlüssel bzw. Wert wurde nicht gefunden.
  FATAL_ERROR: Plesk version file is not exists /version

  OR

  PLESK_ERROR: Erreur┬á: Erreur┬á: le syst├¿me nÔÇÖa pas trouv├® la cl├® ou la valeur de Registre sp├®cifi├®e.
  FATAL_ERROR: Plesk version file is not exists /version

  OR

  PLESK_ERROR: ERROR: El sistema no ha podido encontrar la clave o el valor del Registro especificados.

• The same rows appears in the C:ParallelsInstallerautoinstaller3.log file.

• Initially, Plesk Onyx was installed on an English Windows OS version.

• Later, Windows OS language was switched from English to German/French/Spanish language.

Cause

This is Plesk bug PPPM-9054 which will be fixed in future product updates.

Resolution

As a workaround, perform the following actions:

1. Connect to the server via RDP.

2. Add the English language (if it is not added yet) and switch the display language to English one by following steps from this article:

   Microsoft | Configure the display language

3. Update/upgrade Plesk via GUI/CLI one more time.