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慢慢积累遇到的问题，希望能帮助到其他人。（过于常见的就不写了）
【问题描述】发生系统错误 193。* 不是有效的 Win32 应用程序
【版本】MySQL 5.7/5.6
【解决办法】 在MySQL安装目录，bin文件夹下存在一个0KB的mysqld.exe文件。将其删除即可。
【来源】http://big.info/2014/01/windows-could-not-start-mysql56-service.html
以下是原文：
I have read that there might be several reasons for this error. I did some googling and nobody was mentioning my reason of getting this error so I though sharing my case and my solution could help others.
As I said, in my case the problem was with the MySQL Daemon. If you have used the default installation, you could find the daemon under “C:Program FilesMySQLMySQL Server 5.6bin”.
Note: This is for version 5.6. Might change depending on your version of installation.
Check the size of mysqld.exe file. If that is 0 bytes then you have blown the deamon as I did.
To fix this you can just copy a good mysqld.exe file from another MySQL installation's “C:Program FilesMySQLMySQL Server 5.6bin” directory. Make sure that the installation versions are the same.
Then the error message should be gone. Your MySQL should work now.
If this is not the case for you keep googling.
Hope this helps someone.
Good luck,
Serdar.
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