Article ID: 122479, created on Jul 26, 2014, last review on Aug 17, 2016

  • Applies to:
  • Plesk 12.5 for Windows
  • Plesk 12.0 for Windows


Update Plesk 11.5 to 12 fails on action 'Upgrading MySQL Server system database':

    MSI: Error! Critical action 'Upgrading MySQL Server system database...' failed:
    Command "C:\Program Files (x86)\Parallels\Plesk\admin\bin\mysqlmng.exe" --upgrade-local-service failed with code 1.
    Starting MySQL server...
    Upgrading MySQL server data...
    Execute C:\Program Files (x86)\Parallels\Plesk\Databases\MySQL51\bin\password=******* failed[1]: Looking for 'mysql.exe' as: C:\Program Files (x86)\Parallels\Plesk\Databases\MySQL51\bin\mysql.exe
    Looking for 'mysqlcheck.exe' as: C:\Program Files (x86)\Parallels\Plesk\Databases\MySQL51\bin\mysqlcheck.exe
    Running 'mysqlcheck' with connection arguments: "--port=8306"
    C:\Program Files (x86)\Parallels\Plesk\Databases\MySQL51\bin\mysqlcheck.exe: Got error: 1045: Access denied for user 'local_mysql_root'@'localhost' (using password: YES) when trying to connect
    FATAL ERROR: Upgrade failed

    Failed to install 'C:\ParallelsInstaller\parallels\PANEL-WIN_12.0.18\dist-msi-Microsoft-2003-i386\mysql-server-configurator.msi': Fatal error during installation. (Error code 1603)


According to the error message above, mysqlcheck utility is trying to use port 8306. It is not correct Incorrect my.ini file is used.


System checks my.ini file in a certain order described in Mysql documentation.

Make sure that there is no any additional my.ini files in specified directories.

Search Words

update plesk

The upgrade of the Parallels Plesk Panel to 12.0.18 has failed

Execute C:\Program Files (x86)\Parallels\Plesk\MySQL\bin\mysql_upgrade.exe --force --host= --port=8306 --

FATAL ERROR: Upgrade failed

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