The GetLastError() works for me everywhere I'm using it. Can you post your code? What WIndows version are you running?

>GetLastError always return 0. I'm try to call simple CopyFile API function with non exist file names. CopyFile return 0 - error. But GetLastError return 0. I need to use GetLastError in internet API to calculate size of the buffer to receive the string.
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>Thanks for help.