We are using a .NET application to connect to authorize.net. When first doing this, we were getting the following permissions error. "Unable to find an entry point named EnumerateSecurityPackagesW in DLL
To fix the issue, I added the ASPNET user group to the file that connects to authorize.net, gave it full control, re-started IIS, and the error went away. For about 5 days that is, then it returned generating the above error
When it returned, I noticed I could fix the problem by re-starting IIS. Again, same thing. It works again but every 4-5 days it stops working generating the above error.
In an attempt to resolve the issue once and for all, I added the ASPNET user group to the entire website and gave it modify permissions. I also checked the box in IIS to allow script access for this site. Again after 4 days it stopped working again generating the above error.
The least time, I noticed that the ASPNET user group was removed from the entire web except the file I had originally set it on and the script access box had mysteriously become unchecked. It would seem IIS permissions are being overwriiten and/or ignored. Any clues as to why this happens and so sporadically?