Could not acquire management access for administration

Open mysql service

1. Win+R executes the command services.msc, opens the service, finds MySQL**, and starts the MySQL service;
2. The administrator runs cmd and executes the command net start mysql;

/>>> Open cmd and enter mysql -u root -p to log in to the root user.
Decoding method
Open the MySQL Workbench 8.0\workbench\os_utils.py file and modify encoding="utf-8"It is encoding="gbk";
Just restart the workbench.