Mysql Error 1067 The Process Terminated Unexpectedly Fix [Solved]

What is MySQL Error 1067?

MySQL Error 1067 is a Windows-specific service failure indicating that the database engine started but crashed immediately. This is usually caused by corrupted InnoDB log files, invalid paths in the “my.ini” configuration, or insufficient folder permissions.

Step-by-Step Solutions to Fix Error 1067

1. Delete Corrupted InnoDB Log Files

One of the most common causes of Error 1067 is a mismatch in the redo logs. Deleting these files forces MySQL to recreate them cleanly upon the next service start.

1. Open the Services manager (services.msc) and ensure the MySQL service is stopped.
2. Navigate to your MySQL Data directory (typically C:\ProgramData\MySQL\MySQL Server X.X\Data).
3. Locate the files named ib_logfile0 and ib_logfile1.
4. Move these files to a backup folder or delete them.
5. Attempt to restart the MySQL service.

2. Verify the my.ini Configuration File

If the basedir or datadir paths inside your configuration file are incorrect, the process will terminate. Verify that these paths point to the actual locations on your hard drive.

# Open my.ini and check these lines:
[mysqld]
basedir="C:/Program Files/MySQL/MySQL Server 8.0/"
datadir="C:/ProgramData/MySQL/MySQL Server 8.0/Data/"

Ensure you use forward slashes (/) or escaped backslashes (\\) in the file path to avoid syntax errors.

3. Reinstall the MySQL Service

If the Windows service registry entry is corrupted, you can manually remove and recreate it. This resets the execution parameters for the MySQL daemon.

# Run Command Prompt as Administrator
# Step 1: Remove the service
sc delete mysql

# Step 2: Navigate to your bin folder
cd "C:\Program Files\MySQL\MySQL Server 8.0\bin"

# Step 3: Reinstall the service
mysqld --install

4. Check for Port Conflicts

MySQL cannot start if another application is already using port 3306. Use the following command to identify conflicting processes.

# Check for processes using port 3306
netstat -ano | findstr :3306

If a PID (Process ID) is returned, end that task in Task Manager before starting MySQL again.