Version 25H2 Not Installing Install Error 0x800705b9 On Windows 11 FIX

Описание: When you see error 0x800705B9 installing Windows 11 Version 25H2, it most often means that Windows Update cannot reliably configure or launch the required servicing components or services — usually because of corrupted system/update files, disabled essential services, or interference from other software.

Common Causes

1. Corrupted or Missing System Files & Component Store
• If files required for servicing updates (e.g., in the WinSxS folder) are damaged or missing, the update cannot proceed. 
• Prior failed updates or power-loss incidents can leave your system in a state where servicing components aren’t reliable.

2. Misconfigured or Disabled Update Services
• Services that Windows Update depends on (such as App Readiness, Windows Update service, BITS) may be disabled, corrupted, or misconfigured.
• The error has been specifically linked to the “App Readiness” service being disabled in some cases.

3. Corrupted Update Cache or Temporary Files
• Files in C:\Windows\SoftwareDistribution or C:\Windows\System32\Catroot2 could be broken, preventing the update from verifying or applying correctly.

4. Insufficient Disk Space or Storage-Related Issues
• While not always explicitly cited for 0x800705B9, many users report that low free space or insecure storage state causes failures during major updates.

5. Third-Party Software Conflict
• Antivirus, system optimizers, or background applications may interfere with services or processes needed for the update and trigger 0x800705B9.

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》 CHAPTERS 《

00:00 Intro
00:11 Solution #1
02:12 Solution #2
02:58 Solution #3
05:14 OUTRO