Windows & BSOD · high

How to fixWU-0x80070490

Windows Update Error 0x80070490

What this error means

This high-severity issue affects the Windows operating system. The Component Store or Component-Based Servicing (CBS) manifest file is corrupted, causing Windows Update installation attempts to fail. It's also often linked to registry corruption inside the HKEY_LOCAL_MACHINE\Components registry hive. 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 the DISM RestoreHealth command to download clean manifest files from Windows Update.

Run the DISM RestoreHealth command to download clean manifest files from Windows Update..

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 the SFC tool to scan and repair corrupted system files in the Windows folder.

Run the SFC tool to scan and repair corrupted system files in the Windows folder..

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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03If components are unrepairable, run a Windows repair install (in-place upgrade) using the Media Creation Tool.

If components are unrepairable, run a Windows repair install (in-place upgrade) using the Media Creation Tool..

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

  • Corrupt manifest files inside the C:\Windows\Servicing\Packages system folder.
  • Registry corruption inside the HKEY_LOCAL_MACHINE\Components registry hive.
  • Interrupted write operations caused by sudden power failures or system crashes during update installations.