Thread: possible reasons for invalid handle from CreateFile

hello, the following is the code i use to create a file handle:

Code:

::CreateFile(filepath, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);

like all bugs, it works on my machine and my test environment, but doesn't work at the customer's site. GetLastError() is telling me that the handle is invalid. what are some things to look for in troubleshooting this error?

thanks.

What is your test environment and how is it different from the customer's? I assume you are running a release version at the customers? Did you also run a release version in your test environment? Are you using any ASSERT statements that contain anything critical to the file opening, since ASSERTS aren't available during RELEASE builds.