If Call of Duty shader compilation is stuck on Steam, first stay at the game’s main menu and let shader preloading finish. Then verify the game’s files in Steam, check the driver recommendation for your exact Call of Duty release and GPU, and test for software conflicts. The right advice can differ between Warzone, Black Ops 6, and other releases, so identify the specific game before changing drivers or settings.
Identify the Call of Duty release and the error
“Call of Duty” covers multiple games, and Activision’s PC troubleshooting advice is release-specific. In Steam, check the exact game name in your Library before following a support page or applying a driver recommendation. Activision’s Warzone support page also presents a selector for multiple Call of Duty titles.
Before troubleshooting, note the full error text, your GPU and driver version, and what the game does: does preloading progress slowly, stop responding, or finish before the game crashes? These details help distinguish a long first-boot preload from a persistent fault and are useful if you contact support.
Let shader preloading complete at the main menu
Shader preloading is an expected part of first boot in the reviewed releases. Start the game and remain at the main menu until the process finishes; do not navigate away while it is running. Activision warns that leaving the main menu stops preloading and can cause performance issues. This guidance appears in its Warzone, Black Ops 6, and Modern Warfare II PC troubleshooting pages.
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If the preload appears stalled, give it time at the menu before interrupting it. The reviewed official guidance does not establish a universal expected duration or a guaranteed fix for every shader compilation error.
Verify the game files in Steam
Activision recommends verifying Steam game files for the reviewed releases. In Steam, use the game’s Library entry to run Verify the integrity of the Game Files. Let Steam complete the check and any repair or download it starts, then launch the game again and allow shader preloading to finish.
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Check the driver recommendation for your game and GPU
Do not copy a driver number from a troubleshooting page for a different Call of Duty game. Recommendations depend on both the release and GPU vendor, and can change over time. Use the PC troubleshooting page that matches your game and check its current advice before installing, updating, or rolling back a driver.
For scope, Activision’s Warzone PC troubleshooting page, dated 03/11/26 and accessed 2026-10-03, lists AMD 25.12.1; NVIDIA 591.59 for desktop and notebook GPUs and 582.08 for workstation GPUs; and Intel 32.0.101.8531. These are Warzone-specific listed recommendations, not universal fixes. The Black Ops 6 page lists different recommendations and advises rolling back to its listed version if newer drivers cause issues. Check the matching page for current details rather than treating those examples as current advice for every game.
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Test for background software conflicts
Close programs that may interfere with Steam or the game, then test again. Activision’s troubleshooting pages suggest a clean boot if the problem persists; the Black Ops 6 page additionally calls out device-control or peripheral software, overclocking tools, and tuning software. Change one variable at a time so you can tell whether a change affects the error, and restore your usual settings afterward.
Avoid disabling antivirus wholesale. If antivirus interference is suspected, Activision’s Warzone guidance suggests considering an exception for the exact game folder; only do so carefully and for the matching installation.
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If shader compilation still fails
Use the Activision support page for the exact release and its PC crash report option, where available. Include the exact error text, game build, GPU, driver version, and the troubleshooting steps you tried. The reviewed guidance does not promise one fix for every compilation error, so those specifics matter when seeking help.
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- Call of Duty: Warzone PC Troubleshooting (page dated 03/11/26)
- Call of Duty: Black Ops 6 PC Troubleshooting (page dated 07/02/25)
- Call of Duty: Modern Warfare II PC Troubleshooting (page dated 04/26/23)
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