CreateFile function failed with Mapped drive

[Doraemon]

I use CreateFile function to check valid path of a text file saved in another PC (this file has been already mapped to my PC) like this:

HANDLE hFile;
hFile = CreateFile(strFile,GENERIC_READ,0,NULL,OPEN_EXISTING,FILE_ATTRIBUTE_NORMAL,NULL);

Sometimes,the hFile variable return INVALID_HANDLE_VALUE but then I open this text file again in Window Explorer,this function run well.
Please help!
Thanks

hFile

[tiggerrae]

Any idea?

I have the same problem trying to open a file from my mapped drive path

Y:\terrain\dted\DTED2\dted\W118\N32.dt2

Y is mapped to a network path

I found it is case sensitive. Is it true?