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“The application has unexpectedly stopped working” is a crash message, not a diagnosis of one specific Warzone fault. On PC, note the exact message, any code, and where the crash occurs; then repair the game files, check Windows and graphics-driver guidance, let Shader Preloading finish, and test for the software conflicts Activision names. These steps may help identify or resolve the problem, but they are not a guaranteed fix.
First, identify when Warzone crashes
Before changing settings, record the full error message and any displayed code. Note whether the crash happens before the Main Menu, during Shader Preloading, or after you enter a match, and record the time. Activision’s guidance for crashes and freezes also recommends noting your launcher, Windows version, GPU and driver version, and the troubleshooting steps you have tried.
This guide covers the PC troubleshooting supported for Steam and Battle.net. Activision lists Windows 10 and Windows 11 as supported and recommends using the latest version of either; Windows 7 and Windows 8 are unsupported. Check the current Warzone PC requirements for your system.
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Damaged or missing files are worth checking before moving on to more involved troubleshooting. Use the option for the launcher where you installed the game:
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- Battle.net: Open Warzone’s page in the Battle.net app and select Scan and Repair.
- Steam: In your Library, right-click the game and choose Properties > Installed Files > Verify integrity of game files.
Activision lists launcher file repair among its PC troubleshooting steps. Repairing files is a useful first check, but it does not guarantee that every crash will be fixed.
Check Windows and graphics-driver guidance
Install available Windows updates and check Activision’s current driver recommendations before installing a graphics driver. The recommendations can change, so use the versions listed on Activision’s Warzone PC requirements page rather than relying on an older version number.
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Activision’s page notes that NVIDIA Maxwell and Pascal graphics architectures have a separate recommendation: driver 581.80 is the last recommended driver for those architectures. If you have one of these GPUs, check the page’s current instructions before updating.
Let Shader Preloading finish
Shader Preloading is an important part of the game’s first boot. Let it complete before playing, and do not leave the Main Menu while it is running: Activision warns that navigating away stops the process and can lead to performance issues. Its PC guidance explains this step.
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Check for software conflicts Activision names
If the crash continues, close or disable NZXT CAM, MSI Afterburner, and Razer Cortex, then test Warzone again. Activision identifies those programs as possible conflicts in its PC troubleshooting guidance; that does not establish that every overlay or background app causes this particular message. If you use Razer Synapse, Activision separately recommends updating it.
You can also try a Windows clean boot with only the minimum programs running, as Activision recommends. Because a clean boot changes which background services and apps start, use care if you rely on them; restore your normal startup configuration after testing.
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Retest the same failure point, then report a recurring crash
- Launch Warzone and repeat the same action that triggered the crash, or reach the same point in startup or gameplay.
- Record whether the original error returns at the same point. If it now occurs somewhere else, note the changed symptom rather than assuming the cause is unchanged.
- If the crash persists, submit Activision’s Call of Duty PC Crash Report. Include the error and code, crash point, launcher, Windows version, GPU and driver version, and the steps you have already tried.
What this error does—and does not—tell you
The phrase “application unexpectedly stopped working” indicates that the game crashed, but Activision does not identify a separate root cause or universal fix for this exact wording. The steps above follow its current PC troubleshooting guidance; if they do not resolve the crash, check Activision’s support pages for current known issues and report the failure. This guidance does not establish an equivalent fix for PlayStation or Xbox.
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