Symptoms
- One only English language is available in Plesk interface in spite of purchased additional language pack.
- The following can be found in C:\ParallelsInstaller\autoinstaller3.log
[2020-05-07 21:03:30.276281] Registering locales...
[2020-05-07 21:03:30.824719] Package action: Execute, package: plesk-l10n, exec time: 0 sec. desc: "program='[PLESK_INSTALLDIR]\admin\engine\php.exe'," "command-line='C:\Program Files (x86)\Plesk\admin\plib\scripts\add-locales.php'," "working-dir=''," "context=''," "arch=''", output='~empty'
[2020-05-07 21:03:30.824719] C:\Program Files (x86)\Plesk\admin\engine\php.exe "C:\Program Files (x86)\Plesk\admin\plib\scripts\add-locales.php" failed with error 255(0x000000ff). Output:
Sub-action 'Execute' failed with error code: 255(0x000000ff)
Cause
Installed locales are not properly registered.
Resolution
Connect to the server via RDP
Launch locale installer in command line to register these:
c:\>plesk php "C:\Program Files (x86)\Plesk\admin\plib\scripts\add-locales.php"