该文件常见出现的位置

版本	位置
10.0.1600.22((SQL_PreRelease).	\SQL2008\x86\Setup\sql_engine_core_shared_msi\Windows\Gac
10.50.1600.1((KJ_RTM).100402-1	\x86\Setup\sql_engine_core_shared_msi\Windows\Gac
10.50.1600.1((KJ_RTM).100402-1	\x86\Setup\sql_engine_core_shared_msi\Windows\Gac
10.50.1600.1((KJ_RTM).100402-1	\SQL\x86\setup\sql_engine_core_shared_msi\windows\gac
10.0.1600.22((SQL_PreRelease).	\x86\Setup\sql_engine_core_shared_msi\Windows\Gac
10.0.1600.22((SQL_PreRelease).	\BcmSqlSetup\x86\setup\sql_engine_core_shared_msi\windows\gac
10.0.1600.22((SQL_PreRelease).	\BcmSqlSetup\x86\setup\sql_engine_core_shared_msi\windows\gac
10.50.1600.1((KJ_RTM).100402-1	\sql2008r2\x86\Setup\sql_engine_core_shared_msi\Windows\Gac
10.0.1600.22((SQL_PreRelease).	\SQL2008\zh-hans_sql_server_2008_enterprise_x86_x64_ia64_dvd_x14-89199\x86\Setup\sql_engine_core_shared_msi\Windows\Gac
10.0.1600.22((SQL_PreRelease).	\kaifagongju\SQLFULL_CHS\x86\Setup\sql_engine_core_shared_msi\Windows\Gac
10.0.1600.22((SQL_PreRelease).	\MicrosoftSQLServer2008\x86\Setup\sql_engine_core_shared_msi\Windows\Gac
10.0.1600.22((SQL_PreRelease).	\SQLServer2008SP1Full\Enterprise\x86\Setup\sql_engine_core_shared_msi\Windows\Gac
10.50.1600.1((KJ_RTM).100402-1	\cn_sql_server_2008_r2_enterprise_x86_x64_ia64_dvd_522233\x86\Setup\sql_engine_core_shared_msi\Windows\Gac
10.50.1600.1((KJ_RTM).100402-1	\Daemon_Tools\SQL_Server\x86\setup\sql_engine_core_shared_msi\windows\gac
10.0.1600.22((SQL_PreRelease).	\ThunderNetwork\data\MediaInfoAddin\XAR\x86\setup\sql_engine_core_shared_msi\windows\gac

一、如果您的系统提示“没有找到cynusy_y.dll”或者“缺少cynusy_y.dll”等类似错误信息，请把cynusy_y.dll下载到本机
二、直接拷贝该文件到系统目录里：
　 1、Windows NT/2000系统，则复制到C:\WINNT\System32目录下。
2、Windows XP/Vista/Win7/8系统，则复制到C:\Windows\System32目录下。
三、然后打开“开始-运行-输入regsvr32 cynusy_y.dll”，回车即可解决错误提示！