This document explains how to fix Microsoft Office 2013/365 activation Error code 1056-16 if it is not working correctly or throwing an unexpected error. 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 1056-16 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
1056-16 Error Code Log
Avg. Time to Resolve Issue   40 mins
Difficulty Hard
Log Name: Microsoft Office <version> 6.91
Source: DLL Conflict
Event ID: 3951
Task Category: (452)
Level: Administrator
User: <Windows username>
  • Faulting application name: Microsoft Office <Application name>, version: 2.4.1299.19424, time stamp: 0×87960256
  • Faulting module name: Office update.dll, version: 8.3.1878.99865, time stamp: 0×45734645, time stamp: 0×34418860
  • Exception code: 0xe03g368e
  • Fault offset: 0xb06e393e
  • Faulting process ID: 0×788
  • Faulting application start time: 0x09affe5a70454240
  • Faulting application path: ~<userpath>
  • Faulting module path: ~C:\Program Files (x86)\Microsoft Office\<appname>
  • Report ID: e2e94e36-2973-71c2-7611-1239beb2b322
Table of contents

Symptoms of Error Code

  • You will get errors when opening/configuring MS Office
  • Low memory error
  • Microsoft Office Application Will Stop.

Cause of 1056-16 Error Code

  • Corrupt Office application files
  • Internet connectivity issue
  • System Level Conflict

How to fix activation Error Code 1056-16

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 Disable any installed Antivirus/Malware/Adware Program Temporarily:
Some times Antivirus/Malware/Adware programs mark Microsoft office installer files as Spam and block it from installing. Please refer your vendors website for disabling it temporarily. Once installation is done you can activate it again.

Step 2 How to perform Disk cleanup:

1. Press Windows Key + R and Enter Cleanmgr
2. Click OK.

Step Fix 1056-163. Drive Selection Box will open up. Select the System drive and Click OK.
Select Drive for Diskcleanup4. Select all the check boxes and click OK.

Tick All Boxes and Press OK

In most cases error code 1056-16 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: 11/01/2016
Solution ID: 124576

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