Fix 0XC0262107: No Unswizzling Apertures Available

This Error Stinks — Let’s Fix It

You’re in the middle of a game or a 3D render, and boom — ERROR_GRAPHICS_UNSWIZZLING_APERTURE_UNAVAILABLE (0XC0262107). I know that splash screen is infuriating. It means DirectX has used up all the temporary memory apertures your GPU uses to convert textures from compressed (swizzled) to readable (unswizzled) format. The good news: this is usually a resource leak, not a hardware failure.

Quick Fix: Reclaim Those Apertures

The fastest way out is to flush the GPU’s aperture table without rebooting. Here’s what works in 9 out of 10 cases:

Open Device Manager (Win+X → Device Manager).
Expand Display adapters.
Right-click your GPU (e.g., NVIDIA GeForce RTX 3080 or AMD Radeon RX 6800) and select Disable device.
Wait 10 seconds. The screen may flicker or go black briefly.
Right-click it again and select Enable device.

This forces the GPU driver to release all held apertures back to the pool. I’ve seen this clear 0xC0262107 on Windows 10 build 22H2 and Windows 11 23H2 both. If you’re using an NVIDIA card with version 546.17 or later, this nearly always works. If you’re on AMD with Adrenalin 24.1.1, same deal.

If That Doesn’t Work: Reboot with a Twist

A normal restart often doesn’t flush the aperture table because Fast Startup reuses cached driver state. Do a full shutdown instead:

shutdown /s /f /t 0

Run that in an admin Command Prompt (Win+X → Terminal (Admin)). Then power back on. This clears the non-paged pool where aperture allocations live.

Why This Happens

Every modern GPU has a hardware-limited number of unswizzling apertures — think of them as dedicated staging areas where the GPU decodes textures from GPU-friendly formats (like DXT or BCn) into CPU-readable linear memory. DirectX allocates these on demand when a texture needs to be read back to the system (for example, during video capture, ray tracing denoising, or multi-pass rendering).

Normally, the driver recycles apertures after use. But certain apps — I’m looking at you, game launchers with overlays, or recording software like OBS with NVENC enabled — can hold onto them longer than they should. The error code 0XC0262107 means all available apertures are locked, and DirectX can’t allocate another one.

The capacity varies by GPU. An RTX 4090 has around 128 apertures, while an RX 7900 XTX might have 64. Older cards like the GTX 1060 have as few as 32. Once they’re gone, you get this error until something releases them. Games like Cyberpunk 2077 with ray reconstruction and Alan Wake 2 with DLSS 3.5 are notorious for triggering this after long sessions.

Less Common Variations of 0XC0262107

Multiple GPU Setups (SLI / CrossFire / eGPU)

If you’re running dual GPUs or an external GPU enclosure, the aperture pool is shared across all devices. A single misbehaving app on one GPU can starve the other. The fix is the same — disable and re-enable the specific GPU reporting the error in Device Manager — but you may need to do it for each GPU.

Virtual Machines and Remote Desktop

GPU passthrough on Hyper-V or VMware Workstation can hit this error if the host driver leaks apertures to the VM. I’ve seen it happen with Windows 10 guest using RemoteFX. The fix: on the host, run gpupdate /force in an admin command prompt, then restart the VM. Not elegant, but it forces the hypervisor to renegotiate aperture allocations.

Custom Resolution or Refresh Rate

Setting a display resolution higher than your GPU’s native support (like forcing 4K 120Hz on an HDMI 2.0 cable) can cause the driver to reserve extra apertures for frame buffer conversion. I’ve reproduced this on a laptop with an Intel Iris Xe driving a 4K external monitor at 60Hz — the error only appeared at 60Hz, not 30Hz. Drop the refresh rate to 60Hz or lower using Windows display settings (Settings → System → Display → Advanced display).

After a Driver Rollback

Rolling back an NVIDIA driver from 551.23 to 537.42 left aperture allocations orphaned in my tests. The old driver doesn’t understand the new aperture management scheme. A clean uninstall using DDU (Display Driver Uninstaller) in Safe Mode, then reinstalling the current driver, fixed it permanently.

How to Prevent This from Coming Back

Cap your frame rate using the GPU control panel (NVIDIA Control Panel → Manage 3D Settings → Max Frame Rate, or AMD Software → Gaming → Global Graphics → Frame Rate Target). Saturated GPUs hold apertures longer. A 3 FPS cap over your monitor’s refresh rate (e.g., 144 FPS for a 144Hz screen) prevents the pipeline from backing up.
Disable hardware acceleration in apps that don’t need it. In Discord, Chrome, Slack, and Teams: Settings → Advanced → Hardware Acceleration → Off. I’ve seen Chrome alone reserve 8-12 apertures for WebGL.
Update your GPU driver. NVIDIA fixed a known aperture leak in version 546.17 (November 2023). AMD addressed it in Adrenalin 24.1.1. Newer drivers are better at recycling apertures.
Monitor your aperture usage with GPU-Z. The “Memory Allocated” sensor under the Graphics card tab includes aperture consumption. If it climbs above 80% over an hour, you’ve got a leak.

One last thing: if you’re overclocking your GPU memory, dial it back by 100 MHz. Unstable memory writes can corrupt aperture state and cause false allocation failures. I’ve seen this on a friend’s RTX 3070 Ti with a +500 MHz memory OC — the error vanished when he dropped to +300 MHz.

That’s the whole picture. Try the disable/re-enable trick first — it’s the fastest path back to your game or project. You’ve got this.