About this tag
The CreateFile function is a core Windows API used for opening handles to files, devices, volumes, and COM ports. Discussions on WindowsForum.com cover common issues such as failing to open physical drives or COM ports above COM9, permission errors when creating files with specific access rights, and CRC errors when reading volume snapshots. Users also explore workarounds like using XP compatibility mode or manifest elevation files. Topics include Python file permission handling, MASM assembly programming, and MFC C++ applications. Troubleshooting often involves adjusting access flags, using correct device paths like \\.\PhysicalDisk0, or handling legacy compatibility.
  1. Josephur

    Windows 11 Python and Windows File System Permissions

    What is the best way to read a files owner and permissions, create a new file then apply those permissions without using the subprocess method or command line icacls etc.
    • Josephur
    • Thread
    • access control createfile file management file system ownership permissions python scripting user rights windows
    • Replies: 5
    • Forum: Programming and Scripting
  2. E

    Windows 10 Cannot Create Handle to Storage Device Using CreateFile Function

    I cannot open a handle to any of my storage devices. HANDLE h = CreateFile(L"\\\\.\\PhysicalDisk0", GENERIC_READ | GENERIC_WRITE, FILE_READ_ACCESS | FILE_WRITE_ACCESS, 0, OPEN_EXISTING, 0, 0); I also tried copying the full path from WinObj: \GLOBAL??\PhysicalDrive0 and...
    • ExylonFiber
    • Thread
    • access c++ code snippet createfile data access diagnostics disk error file access file management handle kernel-mode programming help storage devices visual studio windows api
    • Replies: 5
    • Forum: Programming and Scripting
  3. G

    Windows 8.1 CRC error reading volume.

    I am using CreateFile to open a snapshot volume, and ReadFile to read from it. On one system I had an attempt to read 1 mb fail with a CRC error. As I understand it, the drive should be doing its own bad sector mapping, but apparently it's not. I know that NTFS has bad sector handling, does...
    • Gregg H
    • Thread
    • bad sectors crc error createfile data integrity disk management drive issues error handling file level file system ntfs operating system read operations readfile storage system issues volume management volume snapshot windows
    • Replies: 2
    • Forum: Programming and Scripting
  4. C

    Windows 7 win 7 x64 trouble

    Every time I create a program with masm and use the CreateFile api it always fails unless I use read access rights. Even some downloaded programs file when they hit CreateFile on my computer. I can usually get around it by using xp compatibility mode and the CreateFile is redirected to...
    • cozofdeath
    • Thread
    • access administrator api compatibility createfile legacy manifest masm uac windows 7 x64
    • Replies: 1
    • Forum: Windows Software
  5. C

    Windows 7 CreateFile failing on Com ports greater than 9

    Hi ALl, Searching the forum didn't turn up anything relevant, so here goes. I've got an MFC C++ application that uses CreateFile() to open a bluetooth device mapped to a virtual com port, and it isn't working on Windows 7 for com ports greater than 9. In fact, specifying the com port as...
    • CarzKaan
    • Thread
    • access violation bluetooth c++ com port compatibility createfile debugging development device management error handling mfc programming sdk software issues threading issues user support virtual com windows 7 workaround
    • Replies: 1
    • Forum: Programming and Scripting