why i can't use CreateFile() to symbol_link?

HI,all

i use VixMntapi_MountVolume() to mount a vmdk,it works.then use VixMntapi_getVolumeInfo() to get the volumeinfo..

it alse works, my symbol_link like "\\.\vstor2_mntapi10-A6EAA6EA007E000000000000100000000"

but when i call CreateFile for create file to  the VMDK, the GetLastError() return value is 19.

how should i do?

thank you.

tuojie