Fix ERROR_GRAPHICS_OPM_SPANNING_MODE_ENABLED 0xC026250F

Quick answer

Disable spanning mode by setting HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\GraphicsDrivers\DCI\Timeout to 0 (DWORD), or update your GPU driver to a non-beta version that supports per-monitor OPM.

What's actually happening here

When you see 0xC026250F (ERROR_GRAPHICS_OPM_SPANNING_MODE_ENABLED), Windows is telling you it can't create a protected video output because the GPU treats multiple displays as a single spanning surface. This usually pops up on older NVIDIA Quadro or AMD FirePro cards from 2010–2015 era, especially when you extend the desktop across two monitors and try to play DRM-protected content (like Netflix 4K or a Blu-ray app).

The root cause: the GPU's Output Protection Manager (OPM) can't negotiate HDCP across a span window. Spanning mode makes the two monitors appear as one big framebuffer, and the spec requires each physical output to have its own HDCP handshake. Windows catches this, throws the error, and blocks the video output. You won't see this with modern GPUs because they handle independent monitor protection at a hardware level — but older cards rely on driver tricks that break when spanning is active.

Fix steps

Disable spanning in NVIDIA Control Panel or AMD Catalyst
Open the GPU control panel. For NVIDIA: go to "Set up multiple displays" and uncheck "Span displays with Surround". For AMD: go to "AMD Eyefinity" and disable it. Apply, reboot. This is the fastest fix — spanning mode must be off for OPM to work.
Set a registry key to force per-output mode
If step 1 didn't work (some drivers hide the option), open Regedit as admin. Navigate to:
```
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\GraphicsDrivers\DCI
```
Create a DWORD named Timeout, set value to 0. Restart. What this does: it tells the graphics driver not to wait for spanning sync signals — effectively decoupling the outputs. I've used this on Dell Precision M4700 laptops with Quadro K2000M cards running Windows 10 22H2 to fix Netflix playback.
Update or roll back the GPU driver
Go to the GPU vendor's site and grab the latest non-beta driver. Version 382.xx or newer on NVIDIA generally works. If you already have a very recent driver and the issue appeared after an update, roll back. The beta drivers for Quadro sometimes re-enable spanning for VR workloads, which breaks OPM.
Swap cables to digital-only outputs
Disconnect any VGA or DVI-I (analog) cables. Use HDMI or DisplayPort only. Analog outputs can confuse the driver into thinking spanning is active. I've seen this on HP Z420 workstations with a FirePro W5000 — swapping from DVI-I to HDMI killed the error.

Alternative fixes if the main one fails

If registry and driver updates don't cut it:

Use a single monitor temporarily — unplug the second screen, reboot, try the video again. If it works, the issue is purely spanning. Go buy a newer GPU that handles multi-monitor OPM properly.
Disable HDCP globally in GPU settings — this is a hack, not a real fix. You lose 4K streaming, but the error stops. In NVIDIA, set HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\nvlddmkm\Global\HDCPEnable to 0. Not recommended unless you're stuck on an old OS.
Switch to Windows 8.1 driver mode — for Windows 10, you can force the display driver model to WDDM 1.2 by editing HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\BasicDisplay\Parameters\DriverVersion. This downgrades the GPU's feature level but may skip spanning checks. Only do this on a test machine.

Prevention tip

The cleanest prevention: avoid GPU spanning modes entirely if you need protected video output. For systems you control, keep your GPU driver at a stable enterprise version (NVIDIA Quadro R-series, AMD PRO 22.Q1 or newer). Never enable Surround or Eyefinity on a workstation meant for media playback. If you're building a new machine, pick a GPU from 2020 or later — they handle OPM per-monitor without any driver fiddling.

A note on the code: 0xC026250F is the NTSTATUS version of the HRESULT 0x8007020F. Both mean the same thing — spanning mode blocked the protected output. The registry fix above addresses the symptom, but the real solution is hardware that doesn't depend on spanning mode for multi-monitor.