This document explains how to fix Microsoft Office Error code 1466-3 if it is not working correctly or throwing an unexpected error while installing or configuring office. This solutions applies for Office Home, Office Personal, Office University, Office Academy, Office for business, Office Professional, Office Professional Plus, Office 365, Office 2013, and Office 2016. The error 1466-3 generally occurs while installing Office, Upgrading office, Opening Office, launching Office, removing/uninstalling Microsoft office or while applying windows updates. This error applies to all Microsoft office Products (Word, Excel, PowerPoint, Outlook, OneNote, Access, Project, Publisher, Visio, Infopath) and the error generally occurs in Windows 10, Windows 8, Windows 8.1, Windows 7, Windows Vista, Windows XP and other Microsoft Windows Editions.

Error InformationError Descripton
1466-3 Error Code Overview
1466-3 Error Code Log
Avg. Time to Resolve Issue   50 mins
Difficulty Critical
Log Name: Microsoft Office <version> 1.98
Source: Application Error
Event ID: 4973
Task Category: (343)
Level: Memory Level
User: <Windows username>
  • Faulting application name: Microsoft Office <Application name>, version: 4.6.5533.58275, time stamp: 0×60517870
  • Faulting module name: Office log.dll, version: 7.3.4155.98936, time stamp: 0×78645067, time stamp: 0×86326090
  • Exception code: 0xc08d562c
  • Fault offset: 0xa02d006b
  • Faulting process ID: 0×757
  • Faulting application start time: 0x14ecgc3e08371728
  • Faulting application path: ~<userpath>
  • Faulting module path: ~C:\Program Files (x86)\Microsoft Office\<appname>
  • Report ID: e1d45e45-6553-58d5-9747-6133deg9e568
Table of contents

Symptoms of Error Code

  • You will get error message while launching/configuring Microsoft Office
  • Computer will be slow to respond
  • MS Office will stop.

Cause of 1466-3 Error Code

  • Corrupt System Files
  • Internet connectivity issue
  • Junk store location contains active threat

Steps to resolve Error Code 1466-3

The steps given below should be followed under strict supervision of a Computer Expert. We are not responsible if anything goes wrong with your PC following the steps. All the steps given above are indicative and should resolve the problem in most cases.  You can contact our 24×7 technical support for guaranteed resolution of the issue.
Step 1 Run Disk Cleanup Wizard

1. Goto My Computer. Right click on Operating System location and select Properties.
How to Resolve 1466-3 2. Click on Disk Cleanupoption button.
Step Fix 1466-33. Drive Selection Box will pop up. Select the OS drive and Press OK.
Select Drive for Diskcleanup4. Tick all the check boxes and Click OK.

Tick All Boxes and Press OK

Step 2 Check Windows Firewall :
1. Press Win Key + R and Enter “Firewall.cpl” (without quotes)
2. Click OK.

3. Click on “Turn Windows Firewall On or Off
Turn Windows Firewall on or off4. In Private network Setting, select “Turn off Windows firewall (not recommended)
5. Do the same for Public Network Setting.
Disable Windows Firewall6. Press OK.
Note: After the issue is resolved you must turn the Windows Firewall on.


In most cases error code 1466-3 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 Technical Support Representative 24/7 by clicking on the Chat button.

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Last Updated: 07/02/2016
Solution ID: 943982

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