Windows & BSOD · high

How to fix0x8000FFFF

Catastrophic Windows Update Failures

What this error means

Catastrophic Windows Update Failures is a high-severity Windows operating system issue. Windows Update encountered an unexpected error and cannot download or install updates. This usually traces back to stopped BITS service and not enough disk space. The steps below are ordered to resolve this efficiently.

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 the Windows Update Troubleshooter

Run the Windows Update Troubleshooter.

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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02Delete the SoftwareDistribution

Delete the SoftwareDistribution.

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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03folder Restart the BITS and WU services

folder Restart the BITS and WU services.

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

  • Corrupted Windows Update cache
  • Stopped BITS service
  • Not enough disk space