Cannot read network files in my OPC Server C++ - file

Question

A little background info:
PC is a Windows 7 64 bit machine with all SP's and windows updates.
I wrote an OPC server using LightOPC as the base and having issues reading network files as the title says. If I run the program manually it reads the files just fine.
There are no permissions issues obviously when running it manually but something else happens when the client launches it (FactoryTalk View 8.0).
The problem occurs when the program starts during the normal OPC connection launching. In the code std::strerror(errno) function returns
no such file or directory
which is obviously a lie. So hopefully someone can shed some light on what I can do to adjust the code (maybe some security level up or something like that) to let it read from these network files (about 10 total). I log data to the Windows Event viewer and I log the user name used to attach to the server, it is using NT AUTHORITY\SYSTEM at program launch.
Here is 1 of the pieces of code used to read 1 of the files (fin.is_open() is returning false so it falls into the else and I am writing the error to the OPC tag so I could debug it):
ifstream fin;
fin.open("\\\\SCS\\C\\Sorter Software\\Data\\TocStatus.dat"); // open a file | std::ios::binary | std::ios::app
if (fin.is_open())
{
char buf[512];
fin.getline(buf, 512);
char *theString = TrimCString(buf);
if (strlen(theString))
mbstowcs_s(NULL, V_BSTR(&tagValues[TAGS_MOTIONTL_STATUS_TOC].tvValue), strlen(theString)*2, theString, strlen(theString));
if (use_window)
ListView_SetItemText(TheListView, TAGS_MOTIONTL_STATUS_TOC-1, 1, theString);
if (tagValues[TAGS_MOTIONTL_STATUS_TOC].tvState.tsQuality == OPC_QUALITY_BAD)
{
tagValues[TAGS_MOTIONTL_STATUS_TOC].tvState.tsQuality = OPC_QUALITY_GOOD;
SetListViewItem(TAGS_MOTIONTL_STATUS_TOC, tagActivationFlags[TAGS_MOTIONTL_STATUS_TOC]);
}
if (tagValues[TAGS_MOTIONTL_STATUS_TOC].tvState.tsQuality != OPC_QUALITY_GOOD)
{
tagValues[TAGS_MOTIONTL_STATUS_TOC].tvState.tsQuality = OPC_QUALITY_GOOD;
SetListViewItem(TAGS_MOTIONTL_STATUS_TOC, 1);
}
}
else
{
V_BSTR(&tagValues[TAGS_MOTIONTL_STATUS_TOC].tvValue) = SysAllocString(L"UNKNOWN ERROR9 ");
mbstowcs_s(NULL, V_BSTR(&tagValues[TAGS_MOTIONTL_STATUS_TOCLOADED].tvValue), strlen(std::strerror(errno)) * 2, std::strerror(errno), strlen(std::strerror(errno)));
tagValues[TAGS_MOTIONTL_STATUS_TOC].tvState.tsQuality = OPC_QUALITY_GOOD;
if (use_window)
{
ListView_SetItemText(TheListView, TAGS_MOTIONTL_STATUS_TOC-1, 1, "UNKNOWN");
SetListViewItem(TAGS_MOTIONTL_STATUS_TOC, 2);
}
UpdateConnStatus(false);
}
fin.close();