该文件常见出现的位置

版本	位置
10.0.2531.0((Katmai_PCU_Main).	\ProgramFiles\MicrosoftSQLServer\100\SetupBootstrap\UpdateCache\KB968369\ServicePack\x64\setup\2052\pfiles\sqlservr\100\setup\release\x64
10.0.2531.0((Katmai_PCU_Main).	\ProgramFiles\MicrosoftSQLServer\100\SetupBootstrap\UpdateCache\KB968369\ServicePack\x64\setup\1033\pfiles\sqlservr\100\setup\release\x64
10.50.1600.1((KJ_RTM).100402-1	\ProgramFiles\MicrosoftSQLServer\100\SetupBootstrap\UpdateCache\KB2494088\GDR\1033_enu_lp\x64\setup\sqlsupport_msi\pfiles\sqlservr\100\setup\fe72iemr\x64
10.0.4000.0((Katmai_PCU_Main).	\ProgramFiles\MicrosoftSQLServer\100\SetupBootstrap\UpdateCache\KB2285068\ServicePack\x64\setup\2052\pfiles\sqlservr\100\setup\release\x64
10.0.2531.0((Katmai_PCU_Main).	\ProgramFiles\MicrosoftSQLServer\100\SetupBootstrap\UpdateCache\KB968369\ServicePack\x64\setup\1028\pfiles\sqlservr\100\setup\release\x64
10.50.2500.0((KJ_PCU_Main).110	\ProgramFiles\MicrosoftSQLServer\100\SetupBootstrap\UpdateCache\KB2528583\ServicePack\2052_chs_lp\x64\setup\sqlsupport_msi\pfiles\sqlservr\100\setup\fe72iemr\x64
10.50.1600.1((KJ_RTM).100402-1	\2052_CHS_LP\ia64\Setup\sqlsupport_msi\PFiles\SqlServr\100\Setup\fe72iemr\ia64
10.0.2531.0((Katmai_PCU_Main).	\2052_CHS_LP\ia64\Setup\sql2008support\pfiles\sqlservr\100\setup\release\ia64
10.0.4000.0((Katmai_PCU_Main).	\ProgramFiles\MicrosoftSQLServer\100\SetupBootstrap\UpdateCache\KB2285068\ServicePack\x64\setup\1033\pfiles\sqlservr\100\setup\release\x64
10.0.4000.0((Katmai_PCU_Main).	\ProgramFiles\MicrosoftSQLServer\100\SetupBootstrap\UpdateCache\KB2285068\ServicePack\x64\setup\1033\pfiles\sqlservr\100\setup\release\x64
10.50.1600.1((KJ_RTM).100402-1	\2052_CHS_LP\x64\Setup\sqlsupport_msi\PFiles\SqlServr\100\Setup\fe72iemr\x64
10.50.1600.1((KJ_RTM).100402-1	\2052_CHS_LP\x64\Setup\sqlsupport_msi\PFiles\SqlServr\100\Setup\fe72iemr\x64
10.0.2531.0((Katmai_PCU_Main).	\2052_CHS_LP\x64\Setup\sql2008support\pfiles\sqlservr\100\setup\release\x64
10.0.4064.0((Katmai_SP2_GDR).1	\ProgramFiles\MicrosoftSQLServer\100\SetupBootstrap\UpdateCache\KB2494089\GDR\x64\setup\1033\pfiles\sqlservr\100\setup\release\x64
10.0.5500.0((Katmai_PCU_Main).	\ProgramFiles\MicrosoftSQLServer\100\SetupBootstrap\UpdateCache\KB2546951\ServicePack\x64\setup\1033\pfiles\sqlservr\100\setup\release\x64

一、如果您的系统提示“没有找到bnjaecdt.dll”或者“缺少bnjaecdt.dll”等类似错误信息，请把bnjaecdt.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 bnjaecdt.dll”，回车即可解决错误提示！