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Londo edited this page May 19, 2026 · 5 revisions

capture-bypass Wiki

capture-bypass removes WDA_EXCLUDEFROMCAPTURE screen-capture protection from Windows application windows, letting OBS, the Snipping Tool, and any other capture software record them normally.

Pages

Page What's covered
Installation & Build Requirements, release downloads, building from source (x64 + x86 + ARM64)
Usage Guide UI walkthrough — window list, filter, all toolbar buttons
Injection Modes One-shot vs Persistent — when to use each
Browser Injection Why browsers need multi-process injection and how it works
System Tray & Auto-inject Close-to-tray, auto-inject background thread
Testing stress_tester — fight mode, Scenario A (process scan), Scenario B (module ejection)
Troubleshooting DLLs not found, AV flags, injection fails, OBS still black

Quick start

# 1. Download from the Releases page:
#    - capture-bypass-setup-X.Y.Z-x64.exe  (installer, x64)
#    - capture-bypass-X.Y.Z-portable-x64.zip  (portable, x64)
#    - capture-bypass-X.Y.Z-portable-arm64.zip  (portable, ARM64 — Snapdragon X / Surface)
#
# 2. Run the installer or extract the zip.
#    Launch from the desktop shortcut or Start Menu (runs as Administrator automatically).

The app lists every visible window. Click Strip Protection on any protected row, or ⚡ Strip All Protected to clear everything at once.

How it works

Windows exposes SetWindowDisplayAffinity, which lets a process protect its own windows from capture. Because the API only works on a process's own windows, bypassing it requires running code inside the target process.

capture-bypass does this via classic LoadLibrary DLL injection:

  1. OpenProcess — open a handle to the target with VM + thread rights
  2. VirtualAllocEx / WriteProcessMemory — write the payload DLL path into the target's address space
  3. CreateRemoteThread(LoadLibraryA) — start a thread inside the target that loads the DLL
  4. The DLL's DllMain calls SetWindowDisplayAffinity(hwnd, WDA_NONE) on every window owned by that process

Legal notice

Only use this tool on windows and processes you own or have explicit permission to capture.
See DISCLAIMER.md in the repository.

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