This document explains how to fix Microsoft Windows error code C80003F3 if it is not working properly or throwing an error while installing, updating or upgrading Windows.

The error message may look like:
– Windows could not search for new updates. An error occurred while checking for new updates for your computer.
– Some updated were not installed. Failed: 98 updates – WindowsUpdate_dt000 WindowsUpdate_C80003F3
Error(s) found: Code C80003F3 Windows update encountered an unknown error.

This solutions applies for following version of Microsoft Windows:

  • Windows 7
  • Windows 8
  • Windows 8.1
  • Windows 10
Error C80003F3 Windows Update Overview
Avg. Time to Resolve Issue   50 mins
Difficulty Very Hard
Log Name: MicrosofWindowsUpdateError8710.log
Source: System
Event ID: 4863
Operating System
  • Windows 7
  • Windows 8
  • Windows 8.1
  • Windows 10
Level: Warning
User: System
Description:
  • Faulting Application Name: Window Update Manager , version: 6.6.1221.55581, time stamp: 0×97006289
  • Faulting module name: Windows  event.dll, version: 1.6.4473.15559
  • Exception code: 0xb07c212d
  • Fault offset: 0xc09b159e
  • Faulting process ID: 0×071
  • Faulting application start time: 0x800f4a29371533
  • Faulting application path: ~<userpath>
  • Faulting module path: ~C:\Windows\System32
  • Report ID: e1g47d13-1891-13g2-4243-1131bed6e879
Also Known as
  • WindowsUpdate_c80003f3
  • C80003F3
  • WindowsUpdate_C80003F3e
  • C80003F3e
  • 0xC80003F3
  • fehler code C80003F3, foutcode C80003F3, fejlkode C80003F3, code d’erreur C80003F3, codice di errore C80003F3, feil kode C80003F3, cod de eroare C80003F3, código de error C80003F3

Cause of C80003F3 Windows Update Error Code

  • DNS Conflict
  • System Level Conflict

How to Resolve Windows Error C80003F3

Step 1: Check for system corruption

1. Press Windows Key + R and Enter cmd
2. Click OK.
open command prompt3. In command Prompt Copy following commands (Simply select the command and press Ctrl+C and press Ctrl+V in command prompt)

 sfc /scannow 

sfc scannow
The system will take some time to check. Let it run for a while. If it finds any issues in “os” integrity it will automatically fix it.

Note: You will need Administrator Access to Run the above command. Simply Right Click on cmd button and select “Run as Administrator

 You can contact our 24×7 customer Live Technician for any help during the whole process. 

Step 2: Disable Proxy
1. Hold Win Key + R. Run Dialogue Box will open up.
2. Type CMD and Press OK.
Office Resolve Error Proxy Check 3. In command Prompt Copy following commands (Simply select the command and hold ctrl+c and press ctrl+v in command prompt)

 netsh winhttp show proxy 

Check Proxy Setting

Note: You will need Administrator Access to Run the above command. Simply Right Click on cmd button and select “Run as Administrator

If you get the message “Direct Access (no proxy server)“, continue to the next step otherwise disable proxy from Network Settings.

 You can contact our 24×7 Live support for any help during the whole process. 

In most cases Microsoft Windows update error C80003F3 should be resolved by following above steps. If however the issue still persists it means there is some critical issue with your system which needs to be fixed manually and is recommended to be done by an experienced Computer Technician.

You can chat one-on-one with one of our Microsoft Certified Support Representative 24/7 by clicking on the Chat button.

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Last Updated: 04/02/2016
Solution ID: 175094

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    April 13th, 2016

    Posted In: Microsoft Windows

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