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specified driver could not be loaded due to system error seor823.dll

I had installed siebel tools on my windows 7 64bit machine and then when i try to open siebel tools application, I am getting below error

“An internal error has occurred within the authentication subsystem for the Siebel application”

So I just checked in my odbc driver, its seem like okay. but the issues was we need to add the odbc datasource name in odbc32bit.

So I have to execute 32bit odbc ” c:\Windows\SysWOW64\odbcad32.exe”

I added the datasource name and just test it test connection, it shows error

“specified driver could not be loaded due to system error seor823.dll”

I had installed 64bit client also on my machine before so that I can’t able to connect 64bit using by odbc32bit.  Install Oracle client 32 bit on windows 7 and set the path.  remove the 64bit client path from environmental variables and restart the machine. now try to connect database using by odbc it was successful.

Now I can able to open my siebel tools