[small bug diary] Navicat failed to connect to MySQL | MySQL service disappeared | mysqld installation failed (this application cannot run on your computer)

problem

Navicat Connect mysql Failure （Can’t connect to MySQL server on ‘localhost’ (10061)）

mysql The service disappeared （ Can't find mysql service ）

mysqld Installation failed （ This app can't run on your computer ）

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• After finishing the big homework , Open it after a while navicat Found that the database connection is not available
• Surf the Internet query , Read computer management > Services and Applications > service , Found not found mysql service
• mysqld Installation failed
  

resolvent

Replace mysqld.exe, namely Re Download Same version mysql, And will download again bin>mysqld.exe replace The original

The detailed steps （win11 For example ）：

1. Complete replacement mysqld.exe
2. Search for cmd> Command prompt > Run as administrator
   
   3.

attach ：

• I still don't know why mysql The service will disappear , May be win11 Problems after update
• mysqld I didn't expect the installation of failed ,mysqld.exe It's actually damaged
• Hope to get the master’s advice.