Windows & BSOD · critical

How to fix0x000000EF

CRITICAL_PROCESS_DIED

What this error means

This critical-severity issue affects the Windows operating system. A critical system process (eg svchost, csrss, wininit) terminated unexpectedly. This usually traces back to malware terminating important processes, extensive registry corruption and failed to read from SSD disk. Use the steps below to track down and fix the cause.

Before you begin

Save open work and back up important files. Note any recent driver or hardware changes. If Windows cannot start, use the startup guide first.

Work through these checks

0 of 3 complete
01Run a full offline antivirus scan

Run a full offline antivirus scan.

Use the instructions for your exact device and operating system. Check the manufacturer’s documentation before changing firmware, hardware, or system settings.

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02Run DISM and SFC offline

Run DISM and SFC offline.

Use the instructions for your exact device and operating system. Check the manufacturer’s documentation before changing firmware, hardware, or system settings.

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03Consider a clean reinstall of Windows

Consider a clean reinstall of Windows.

Use the instructions for your exact device and operating system. Check the manufacturer’s documentation before changing firmware, hardware, or system settings.

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Possible causes

  • Malware terminating important processes
  • Extensive registry corruption
  • Failed to read from SSD disk