Event 1000, Application Error

Question

I've been dealing with this issue for several weeks now. Whenever I play games, my PC suddenly restarts after a few minutes. In the case of CS2, the restart happens just seconds after the game finishes loading.

I've already tried numerous troubleshooting steps and fixes that I found online, but none of them have resolved the problem. I'm hoping someone here might be able to help identify what's causing it.

I've attached the error message I'm receiving. Any advice or suggestions would be greatly appreciated.

Faulting application name: SearchHost.exe, version: 2604.28014.500.0, time stamp: 0x6a0664a8

Faulting module name: ucrtbase.dll, version: 10.0.26100.8521, time stamp: 0xc38f7a35

Exception code: 0xc0000409

Fault offset: 0x0000000000011858

Faulting process id: 0x3EC4

Faulting application start time: 0x1DCEFFB15C589B0

Faulting application path: C:\WINDOWS\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\SearchHost.exe

Faulting module path: C:\WINDOWS\System32\ucrtbase.dll

Report Id: 665d54af-31ca-4011-a26f-d0a32c184c0a

Faulting package full name: MicrosoftWindows.Client.CBS_1000.26100.315.0_x64__cw5n1h2txyewy

Faulting package-relative application ID: CortanaUI

Answer 1

The even trace you have provided seems to be unrelated to the system crashes in the game, that is just a generic error caused by the Windows Search process.

Please check to see if your PC is producing any minidump files, I will check those to see if they provide any insight into a potential cause of the system crashes.

Please do not upload a very large Memory.dmp file.

Open Windows File Explorer.

Navigate to C:\Windows\Minidump

Copy any minidump files onto your Desktop, then zip those up.

Upload the zip file to the Cloud (OneDrive... etc.), then choose to share those and get a share link.

Then post the link here to the zip file, so I can take a look for you.

Answer 2

Event 1000 with exception code 0xc0000409 in SearchHost.exe (ucrtbase.dll) indicates an application crash, but by itself it does not explain the sudden restart during games. Restarts under 3D load are usually caused by driver, GPU, or system instability rather than the SearchHost.exe crash.

Based on the context provided for similar crash/BSOD behavior, focus on GPU drivers, background software, and stability under load:

1. Clean and downgrade GPU drivers In a similar case with Minecraft for Windows crashing, the resolution was to use Display Driver Uninstaller (DDU) and install an older GPU driver version. Newer drivers can cause TDRs and unknown crashes under gaming load.
   • Boot into Safe Mode.
   • Use DDU to completely remove current GPU drivers.
   • Install a known-stable WHQL driver version from the GPU vendor (not the latest optional/beta).
2. Remove or disable OEM performance/overclock tools Another case of repeated crashes and BSODs on a gaming laptop was resolved by removing ASUS Armoury Crate, which was manipulating CPU/GPU frequencies and causing instability.
   • Uninstall any OEM tuning utilities (e.g., Armoury Crate, MSI Dragon Center, Alienware Command Center, etc.).
   • Reboot and test games with stock Windows power plans and no vendor overclocking.
3. Disable crash/defender add‑ons from GPU vendors A Kernel_Security_Check_Failure issue was traced to AMD Crash Defender (service Amdfendr). Disabling that service stopped the crashes.
   • Open services.msc.
   • Locate vendor “crash defender” or similar protection services (e.g., AMD Crash Defender).
   • Set Startup type to Disabled and stop the service.
   • Test gaming again.
4. Check for BSODs and kernel errors Even if the system appears to “just restart,” Windows may be logging a bugcheck or critical error.
   • Open Event Viewer → Windows Logs → System.
   • Look for events around the restart time: Kernel-Power, BugCheck, or driver-related errors.
   • If BSODs are present, collect the minidumps and analyze them or share them in a support forum for driver/module identification.
5. Treat SearchHost.exe crash as secondary The SearchHost.exe / ucrtbase.dll crash (0xc0000409) is likely a side effect of broader system instability rather than the root cause. Prioritize stabilizing GPU drivers and removing conflicting utilities as above, then re-check if the SearchHost.exe crashes persist when the system is otherwise stable.

If, after cleaning and downgrading GPU drivers and removing OEM tuning/crash-defender tools, the restarts stop, the issue was almost certainly driver/utility related rather than the SearchHost.exe event.

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References:

• Minecraft for windows is crashing - Microsoft Q&A
• My Windows 11 PC Hard Freezes for about 30 seconds to a minute when I play certain games. - Microsoft Q&A
• Please check my minidumps, BSOD and shutdowns - Microsoft Q&A
• Kernel_Security_Error BSOD. Driver Verifier causing bootloop. - Microsoft Q&A