MySQL installation is not how to do MySQL installation failure reasons and solutions _mysql

The MySQL database is not installed! MySQL last step is not installed! MySQL is not installed! is not very headache, very nerve-racking, now we do not worry, small set for everyone to organize the MySQL installation failure and the MySQL installation failure solution, hurry to see!

Difficulty 1: MySQL 5.1 installation process reported apply security setting error

1. Uninstall MySQL.

2. Delete directory C:\Documents and Settings\All Users\Application Data\mysql.

3. Re-install MySQL OK.

Difficulty 2: MySQL hint could not start the service MySQL hint

Installing MySQL 5.1.33 the third start service in the Execute configurattion step of the Run Server Instance Configuration Wizard error, error prompted by could not Start the service MySQL

Analysis: This situation is generally because of the installation of MySQL, uninstall is not clean caused by unloading after the restart and then reload. Note that if the service is not uninstalled, you can uninstall it with Mysqld-nt-remove .

The specific methods are as follows:

1. See if there is MySQL in the service, if there is to stop the service.

2. Run the Add Removal program in Control Panel to uninstall MySQL.

3. Open the registry after the uninstall, view the key values under HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services, if there is a related MySQL key value (MySQL, mysqladmin) is deleted, you can.

4. Restart, the MySQL installation of the residual directory deleted (view service, at this time the service has no MySQL).

5. Reinstall MySQL. Do not run the Server Instance Configuration Wizard after the installation, and then run the wizard in the Start menu after the reboot.

Difficulty 3: msyql Install to last step start service error

1. To the control Panel to remove MySQL first.

2. To c disk C:\Program files directory to delete the MySQL directory.

3. If there is a set directory on the other disk also want to delete. Empty directories are also deleted.

4. To the Regedit registry:

Hkey_local_machine/system/controlset001/services/eventlog/applications/mysql

Hkey_local_machine/system/controlset002/services/eventlog/applications/mysql

Hkey_local_machine/system/currentcontrolset/services/eventlog/applications/mysql

If anything, delete all! ( tip: Use the F3 loop to find "MySQL") 5. If the MySQL content in Task Manager is also deleted.

5. Turn off the firewall.

6. Re-install MySQL (I don't have to restart my computer here).

Restart the computer, deactivate IIS, and delete temporary files in temp if necessary when reloading.

When you configure MySQL, replace the MySQL service with a service name.

The above is in the installation of MySQL often encountered errors, I hope this article for everyone's learning help.