[软件故障] Another application is currently using DAO files. Close all other application 安全模式, access, close

现象：在安装data access objects(dao)时，提示

another application is currently using dao files. close all other applications. continue?

如图：

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1970-1-1 08:00

点“是”，无变化；点“否”就退出了。
  
解决：到安全模式下安装即可。