windows 10 will not update – 0x800703fa, 0x800f0845

Troubleshooting Windows 10 Update Errors 0x800703fa and 0x800f0845: A Comprehensive Guide

Introduction

Encountering update issues on Windows 10 can be a frustrating experience, especially when persistent error codes like 0x800703fa and 0x800f0845 inhibit system updates. These errors can prevent your operating system from installing the latest features and security patches, leaving your system vulnerable and potentially affecting performance. In this article, we will explore the common causes of these errors and provide a step-by-step guide to resolving them effectively.

Understanding the Error Codes

• Error 0x800703fa: Typically related to system process failures during the update, possibly caused by corrupted system files or services not functioning correctly.
• Error 0x800f0845: Usually indicates issues with Windows Update components, such as corrupted files, failed installations, or problems with update delivery.

Common Troubleshooting Steps

1. Verify System Compatibility and Prerequisites

Ensure your hardware meets the minimum requirements for Windows 10 version 22H2 and that the system date and time are correctly set, as discrepancies can interfere with update validation.

1. Perform Windows Update Troubleshooter

2. Navigate to Settings > Update & Security > Troubleshoot > Additional troubleshooters.

3. Select “Windows Update” and run the troubleshooter to automatically detect and resolve issues.

4. Reset Windows Update Components Manually

These steps can resolve corruption in update files or services:

• Open Command Prompt as Administrator.

• Execute the following commands one by one:

  net stop wuauserv
net stop cryptSvc
net stop bits
net stop msiserver
ren C:\Windows\SoftwareDistribution SoftwareDistribution.old
ren C:\Windows\System32\catroot2 catroot2.old
net start wuauserv
net start cryptSvc
net start bits
net start msiserver

• Retry the update process afterward.

• Use System File Checker and DISM Tool

Corrupted system files can cause update failures. Use the following commands:

• Open Command Prompt as Administrator.

• Run:

  sfc /scannow
DISM /Online /Cleanup-Image /RestoreHealth

• Allow each process to complete and then attempt the update again.

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