SHFileOperation: randomly raises exceptions when deleting files - c

Question

I am using SHFileOperation() to delete directories from a specific path. It is done in multiple threads and the directory that's deleted is always different.
From time to time, it throws exceptions:
Exception thrown at 0x00007FF8AF5D9D2A (ntdll.dll) in del.exe:
0xC0000008: An invalid handle was specified
and this one:
Exception thrown at 0x00007FF8ACC90A36 (shell32.dll) in del.exe:
0xC0000005: Access violation reading location 0x0000000000000001.
modules:
shell32.dll 00007FF8ACBD0000-00007FF8AE0D8000
ntdll.dll 00007FF8AF530000-00007FF8AF701000
This is the code:
SHFILEOPSTRUCTW tFileOptions = { 0 };
/* Initialize the file options structure for the deletion process */
tFileOptions.pFrom = pwstrPath;
tFileOptions.wFunc = FO_DELETE;
tFileOptions.fFlags = FOF_NOCONFIRMATION | FOF_SILENT | FOF_NOERRORUI;
/* Execute the deletions with the Shell operation */
iResult = SHFileOperationW(&tFileOptions);
if (0 != iResult)
{
printf("WTF\n");
goto lbl_cleanup;
}
SHChangeNotify(SHCNE_RMDIR, SHCNF_PATHW, pwstrPath, NULL);
The pwstrPath has a double null terminator at the end.
What can be the reason for these exceptions?
EDIT
Stack trace:

Answer 1

from stack trace (even without pdb symbols - with it will be much more better ) visible that exception not inside windows shell itself but in third party product - dragext64.dll (this is not native windows image) wich is implement Copy Hook Handler - i advise uninstall this or disable via registry key
HKEY_CLASSES_ROOT
Directory
shellex
CopyHookHandlers
MyCopyHandler
(Default) = {MyCopyHandler CLSID GUID}
and test after this. think exceptions must go away.
also look like some another shell extensions have bugs here - search in google SHELL32_CallFileCopyHooks. for example bug TortoiseGit.dll - note here in stack trace shell32.dll!SHELL32_CallFileCopyHooks()
so all this bugs inside implementation of ICopyHook::CopyCallback method