. Net connection to Oracle OCI. dll loading error Solution

Testing. Net todayProgramWhen I suddenly found that I could not log on to the system, the process was debugged, and an error was reported: the file cannot be loaded (OCI. DLL), it's strange. I searched the internet and found a solution: http://runmin.cnblogs.com/archive/2005/06/25/17863.html:

"Go to oracle \ ora92 and check all authenticated users in the directory. Then, after adding the user, restart the computer. "

I tried it according to this method, but I still got an error. Then I simply assigned everyone the control permission for the directory ....

Continue the process debugging and find that the error has changed: the identity authentication retrieval failed, continue to the Internet to find the answer, find the followingArticle: Http://www.cnoug.org/viewthread.php? Tid = 19621 & SID = khupmotd. The specific solution is as follows:

Start> program> Oracle> Configuration and migration tools>
Net manager → local → profile → ORACLE Advanced Security → verification → remove the "CNT" in the selected method.

I finally fixed the problem, but I still have no idea about the problem. I have to wait for time to study it again.