OculusSetup.exe crashes on launch (0xc0000005)

Hi everyone,

I’ve been stuck for days trying to install the Meta Quest PC app.
Whenever I run OculusSetup.exe (v1.103.0.0) for Meta Quest 3, as administrator, it runs for about a second, creates a log file, and then crashes instantly, no window, no error message, nothing.

I’m on Windows 11 Pro (build 26100) and everything else on the system works fine.

⚠️ The problem

From what I can see, the installer starts normally, it initializes analytics, checks antivirus, downloads the manifest, and then just stops. No download begins, no UI ever appears.

The crash dump and Windows Event Viewer always show the same thing:

Application Error 1000: Faulting application name: OculusSetup.exe Exception code: 0xc0000005 Faulting module name: unknown .NET Runtime Error 1026: Exception Info: System.AccessViolationException

And in WinDbg:

INVALID_POINTER_READ_c0000005_PresentationFramework.dll!System.Windows.StaticResourceExtension.FindResourceInEnvironment Process Uptime: 0 days 0:00:01.000

So the setup is crashing immediately while trying to initialize the WPF UI, specifically inside PresentationFramework.dll.

🧰 What I’ve tried

System repair

• sfc /scannow (found and fixed some files, no change)
• DISM /Online /Cleanup-Image /RestoreHealth
• Reset Winsock and IP stack
• Tried from a new local Windows user, same crash

Security

• Windows Defender disabled
• Firewall enabled
• Controlled Folder Access disabled
• No antivirus, no VPN

Dependencies

• Reinstalled all Visual C++ Redistributables
• Reinstalled .NET Framework 4.8 (EDIT : 4.8.1)
• Reinstalled Edge WebView2 Runtime (system- and user-level)
• Clean-installed latest NVIDIA drivers

Network

• Same crash on both wired and mobile hotspot
• The manifest downloads fine
• Manually downloading the package URLs from the config file works perfectly in Chrome

💡 Conclusion

Everything points to a corrupted or broken PresentationFramework.dll (WPF) component.
The installer crashes before it can even render its UI or start any download.

Even after reinstalling .NET, WebView2, and all dependencies, the issue remains exactly the same.

If anyone from Meta (or anyone who’s seen this before) has a fix for this .NET / PresentationFramework crash, please let me know.
I can share the full crash dump and OculusSetup.log if it helps.

Thanks a lot  I’ve spent hours on this and run out of ideas : {

Maïckel