安裝MYSQL出錯：a windows service with the name MYSQL already...service.

安裝MYSQL出錯：a windows service with the name MYSQL already...service.

今天把mysql5.6卸載了，想裝個5.7，安裝時提示：a windows service with the name MySQL already exists.Please uninstall this service correctly or choose a different name for the new service.

能夠嘗試刪除殘留的註冊表信息HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services下面找到MySQL註冊表信息把它整個刪掉後，重裝mysql成功了！

過了這步到啓動service時又提示：Cannot create windows service for mysql.error:0

WIN+R進入CMD命令行：

1. Microsoft Windows [版本 6.1.7600]  
2. 版權全部 (c) 2009 Microsoft Corporation。保留全部權利。  
3.   
4. C:\Users\Stone>sc delete mysql  
5. [SC] DeleteService 成功  
6.   
7. C:\Users\Stone>  

以後就搞定了！