MySQL failed to start: Error 1053


2016-11-16 13:02:54 UTC


2017-08-16 16:56:17 UTC


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MySQL failed to start: Error 1053

Applicable to:

  • Plesk 11.x for Windows
  • Plesk 10.x for Windows


MySQL Server service fails to start and hangs in ' Starting ' state.

The following error can be found in MySQL error log in ' %plesk_dir%\\Databases\\MySQL\\data ' folder:

150608 22:07:32  InnoDB: Operating system error number 32 in a file operation.
InnoDB: The error means that another program is using InnoDB's files.
InnoDB: This might be a backup or antivirus software or another instance
InnoDB: of MySQL. Please close it to get rid of this error.


Another program was using InnoDB's files: svchost.exe referring to mysql.exe .


  1. Download Process Explorer .

  2. Stop Plesk MySQL Server and MySQL Server services

  3. Open Process Explorer and search mysql string through the processes: Find > Find Handle or DLL

  4. Kill the process that referres to mysql.exe or restart the server.

  5. Contact system administrator to determine the nature of the process (possibly, malware).

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