0x80070070 - Disk Full Update Error

What is 0x80070070?

0x80070070 - Disk Full Update Error (0x80070070) is a medium-severity fault affecting the Windows operating system. There is insufficient disk space on the system drive (C:) or update cache partition to complete the installation. Commonly occurs during major Windows feature updates or large store downloads. Use the steps below to track down and fix the cause.

Common Causes

• Low physical storage capacity on system drive C:
• Excessive update backup files (Windows.old directory)
• Temporary folder clutter and download cache files
• Too small system reserve partition allocated

Step-by-Step Fix Guide

• 1
  Run Disk Cleanup utility in admin mode

  Most reports of 0x80070070 clear up after Run Disk Cleanup utility, so it's worth trying before anything more involved.

• 2
  Delete Windows.old update folder manually

  If it's still not resolved, work through the rest of the steps — they're aimed at rarer disk capacity instability cases.

• 3
  Move large personal files to secondary drive

  "Move large personal files to secondary drive" is worth trying when low physical storage capacity on system drive C: turns out to be the culprit.

• 4
  Run system storage sense optimizer in Settings

  "Run system storage sense optimizer in Settings" targets low physical storage capacity on system drive C:, one of the documented causes of 0x80070070.

Commands & Diagnostics

Frequently Asked Questions