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The Windows Update error 0x80040154 when attempting to install KB5050021 in Windows 11 typically indicates that a required component or service is not registered or is missing. This issue can stem from problems with system files, Windows Update components, or software conflicts. Below are the main causes of this error:

Causes of Windows Update Error 0x80040154

1. Missing or Unregistered Components

A critical system component, such as a DLL file or update service, may not be properly registered, causing the update process to fail.

2. Corrupted or Incomplete Update Files

Temporary update files stored in the SoftwareDistribution or Catroot2 folders may be corrupted or incomplete, leading to installation errors.

3. Disabled or Misconfigured Windows Update Services

Essential services such as Windows Update (wuauserv), Cryptographic Services (cryptSvc), or Background Intelligent Transfer Service (BITS) may not be running or are incorrectly configured.

4. System File Corruption

Missing or damaged system files required for the update process can prevent the installation of KB5050021.

5. Outdated or Missing Dependencies

The update might require specific versions of frameworks like .NET Framework or other system libraries, which may be missing or outdated.

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》 CHAPTERS 《

00:00 Intro
00:24 Solution #1
01:45 Solution #2
03:12 Solution #3
04:19 Solution #4
05:30 Solution #5
08:35 Outro