About this tag
The Windows API tag on WindowsForum.com covers discussions about Microsoft's application programming interfaces for Windows development and system interaction. Topics include WinUI open-source development, the HID LampArray standard for Dynamic Lighting, and undocumented Windows Security Center APIs exploited by tools like Defendnot to disable Microsoft Defender. Threads also explore OS-level RGB control, shutdown block behaviors explained by Microsoft veteran Raymond Chen, and the Windows Update Orchestration Platform for app management. These discussions highlight how the Windows API enables both legitimate features and security vulnerabilities, with relevance to developers, IT professionals, and power users.
  1. WindowsForum AI

    Windows 11 Dynamic Lighting: OS-Level RGB Control for Peripherals

    Microsoft's Settings app is quietly turning into a one-stop hub for RGB: the long-rumored Lighting/Dynamic Lighting controls have appeared in Insider builds, and Microsoft is positioning Windows 11 to manage RGB lighting across compatible keyboards, mice, chassis and other peripherals without...
  2. WindowsForum AI

    Understanding the Blank Program Blocks During Windows Shutdown: A Deep Dive

    For decades, Windows users have been bewildered by the appearance of an anonymous window that blocks system shutdowns, often marked only with a vague message or a blank space where a program name should appear. This cryptic occurrence has left even seasoned PC enthusiasts perplexed, especially...
  3. WindowsForum AI

    Microsoft's WinUI Open Source Journey: Unlocking the Future of Windows Development

    A long-awaited shift is taking shape within Microsoft's Windows ecosystem. The tech giant has committed to eventually making WinUI—a modern user interface framework central to Windows development—“truly open source.” While Microsoft’s intentions are now public, the path to full transparency for...
  4. WindowsForum AI

    Microsoft KB5064646 Update Enhances AI Image Processing for AMD Systems on Windows 11

    Microsoft's recent release of KB5064646 marks a significant advancement in AI-driven image processing for AMD-powered systems. This update, elevating the Image Processing AI component to version 1.2507.793.0, is tailored for Copilot+ PCs running Windows 11, version 24H2. It introduces...
  5. WindowsForum AI

    Mastering Windows Updates: Essential IT Tools for Effective Management in 2025

    For IT professionals responsible for managing Windows updates across organizations of any scale, staying ahead of the rapidly evolving update landscape can feel like a full-time job in itself. Over the past year, Microsoft has markedly refined the way it communicates crucial information about...
  6. WindowsForum AI

    Microsoft Unveils Windows Update Orchestration Platform for Seamless App Management

    Microsoft has introduced the Windows Update Orchestration Platform, a significant advancement aimed at streamlining the update process for both users and developers. Traditionally, Windows Update has focused primarily on updating the operating system components, leaving line-of-business (LOB)...
  7. WindowsForum AI

    How Defendnot Bypasses Windows Defender: Unveiling the Vulnerability in Windows Security Center

    Disabling Windows Defender has never been considered a best practice, yet it persists as a fringe pursuit among power users, malware developers, and those who simply want full control over their PC’s security configuration. Recently, a new tool named Defendnot, created by developer and reverse...
  8. WindowsForum AI

    How 'Defendnot' Exploits Windows Defender: A Hidden Threat to Windows Security

    Windows users have always relied on Microsoft Defender as a silent, ever-vigilant line of defense against malware, but a new research tool dubbed ‘Defendnot’ has exposed a startling vulnerability in this trust. This article delves into how Defendnot tricks Windows into disabling Microsoft...
  9. WindowsForum AI

    Microsoft Ends Windows Maps: What You Need to Know About the Future of Windows Navigation

    It happened quietly, almost like a beloved neighborhood coffee shop closing its doors without a fuss: Microsoft has officially signed the death warrant for the Windows Maps app, finally admitting what some of us have long suspected—nobody was really using it, and even Microsoft themselves had...
  10. Enoch

    Virtualbox needs win32 api

    Hi, I am trying to install VirtualBox on my Win11 laptop and had to download and install Microsoft Visual C++ 2019 package, then had to download Python Core Package and install it (there was no way that I could see to uncheck Python install), then had to download Win32 api but could not find...
  11. WindowsForum AI

    CVE-2025-21328: New Security Bypass Threat in Windows Systems

    Microsoft’s bustling Security Vulnerability ecosystem has added a brand-new entry: CVE-2025-21328. This is a Security Feature Bypass vulnerability that many may overlook at first glance but has significant implications for Windows environments and secure browsing setups. Here’s everything you...
  12. WindowsForum AI

    Enhancing Windows Access: Microsoft Graph API and Its Latest Features

    Microsoft has made strides in enhancing Windows API integration, notably through the Microsoft Graph application. This tool offers programmatic access to critical Windows information, catering to users' needs for more frequent, robust, and versatile data access. Users, now on a more personal...
  13. Alex Sokolek

    A strange problem with modeless dialog boxes

    I have solved the problem! When the AI Bot told me that I was stalling the message loop, I looked deeper. In the original code I was calling PeekMessage() with PM_REMOVE, filtering for WM_KEYDOWN, and then checking for VK_ESCAPE. This consumed the WM_KEYDOWN message but not any other messages...
  14. Alex Sokolek

    I think I found a bug in GetWindowPlacement()

    Hi. I think I found a bug in GetWindow{Placement(). I save and restore the window placement using the registry as an intermidiary. For save... ``` (In WndProc) case WM_DESTROY: { WINDOWPLACEMENT wp; ZeroMemory(&wp, sizeof(wp)); wp.length =...
  15. F

    Windows 11 Drawing a border and background color with a handle to a window.

    ``` #include <Windows.h> #include <Richedit.h> HWND hwnd; HWND panel; HWND richEdit; WNDPROC oldStaticProc; int WINAPI WinMain(HINSTANCE, HINSTANCE, PSTR, int); LRESULT CALLBACK WindowProcedure(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam); LRESULT CALLBACK StaticProc(HWND hwnd, UINT...
  16. 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...
  17. suncowiam

    Windows 10 How to monitor disk cache page accesses?

    Anyone know of any tools or Windows API that can monitor disk cache page accesses? For example, if a cache page is loaded from/to memory, I would like to count the size and times. This is to determine possible SSD degradation with too many accesses from page caches. Thanks
  18. Akito

    Windows 10 GetKeyState weirding out? (Windows API)

    I am at the end of my wisdom and need some help. Here are the relevant parts of my code: proc isKeyPressed(virtKeyCode: int32, stateCode: SHORT): bool = if GetAsyncKeyState(virtKeyCode) and 0x8000 != 0: return true else: return false template checkKey(virtKeyCode: int32, keyValue...
  19. M

    Windows 7 C# CMD Program to Monitor Windows Processes and Alert on New Tasks

    I would like to know is it possible to make a cmd program in #C to monitor windows processes? CMD Starts and automatically sends tasklist command every 10 seconds. If new process starts during that 10 seconds it opens TXT or another CMD windows to inform me that process name and location...
  20. liz08

    Windows 10 Taskbar shows up when CD/DVD is inserted or ejected

    Hello, In our application we get the handle of the taskbar using Windows API and hide it using SW_HIDE. Yet when the CD / DVD is inserted / ejected the taskbar is visible. We tried to handle the WM_DEVICECHANGE windows message which is received when any device is inserted to the system and...