Detailed steps for completely uninstalling MySQL 5.7

This article mainly summarizes various problems of unclean uninstallation when reinstalling MySQL. I hope it will be helpful to you. If you have any questions, you can leave a message to communicate. It mainly introduces the specific steps of completely uninstalling MySQL: including stopping the service, uninstalling related programs, deleting the registry, etc. 1. Stop MySQL service 2. Uninstall MySQL related programs

Step 1: This time it is a win10 system environment; click on the lower left corner: Start -> All Apps -> All recent applications pop up, select MySQL, right-click and click Uninstall, and you will jump to the control panel.

As shown in step 2

Step 2: Go to Figure 1 or Windows key + R-->Control-->Programs and Features; right-click all MySQL programs to uninstall

Step 3: My installation directory is in the C drive. First open C:\Program Files and delete the MySQL folder

step4: Open the hidden file ProgramData folder and delete the following MySQL files

3. Uninstall MySQL related registry, this is also a pit where reinstallation fails

step1: Windows+R-->regedit-->Open the registry

step2: Open and delete according to the path:

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
HKEY_LOCAL_MACHINE/SYSTEM/CurrentControlSet/Services Generally, the service will have the same name (usually MySQL)

Alternatively, press F3 or Ctrl+F to open the search box, enter MySQL, and focus on the computer.

Another important step is to delete the Connector Net XXX registry. Many of the reasons for failure are also in this registry.

Step 3: Delete the found MySQL registry directly

4. After completing the above 3 steps, you can reinstall the database