MySQL is completely uninstalled and MySQL service is cleaned up

Mode one
Open the control panel , uninstall MySQL;

Then delete the... In the installation directory MySQL file ,eg：C:\JavaDev\MySQL\mysql-8.0.28-winx64;

Delete hidden files ProgramData Under the MySQL, Delete the whole ;
How to view hidden files ： see ProgramData file ,windows10 Click to view and check the hidden file ;

At this time, the uninstall is complete

Problems arise , Not unloaded clean mysql service , Shortcut key win+r, Input services.msc; Looking at the service, you can see a mysql service , This indicates that the service was not uninstalled cleanly ;
stay cmd Lower command panel , Input sc query mysql Be able to view information about MySQL Service information ;
Some articles suggest sc delete mysql You can do that. mysql Delete the service , I tried , It didn't work , If you're in the same situation as me , Try the following ;

How to delete mysql Service? ,win+r Shortcut key , Input regedit, Open the registry ;
see HKEY_LOCAL_MACHINE/SYSTEM/ControlSet001/Control/MySQL, Whole handle MySQL File deletion ;
see HKEY_LOCAL_MACHINE/SYSTEM/CurrentControlSet/Control/MySQL, ditto , take MySQL Delete the whole file ;
Then open the cmd Command Panel , Input net stop mysql, Out of Service , Input again sc delete mysql Delete service ;
Here we are mysql Service tips （ Failed to read description , Error code 2）; Confirm again that you have installed MySQL Delete and ProgramData Under the MySQL Delete clean ;

Then came the point , Restart your computer , You'll find that mysql The service is gone , At this time, it means that you have all MySQL The residue is unloaded clean ;
You can do it again MySQL Installation ;

Mode two ：
This method is relatively simple , If you follow MySQL Of msi Installation files are installed all the way down , And keep msi file ;
Rerun msi file , Click on remove MySQL; Start mysql The uninstall program for ;
Then just like above , But it's concise , Just delete mysql Installation directory ,eg：C:\JavaDev\MySQL\mysql-8.0.28-winx64;
Then delete the hidden folder ProgramData Under the MySQL file ;
OK, Be accomplished , Successfully uninstalled mysql, You can do it again mysql Installation .