This document explains how to fix Microsoft Outlook error code 0x800CCe05 if it is not working properly or throwing an error while installing, updating,  launching/opening, performing action like sending or receiving emails, configuring emails etc.

The error message may look like:

  • An unknown error occurred, error code: 0x800cce05
  • Task ‘e-mail address’ reported error (0x800CCE05) : ‘Synchronization error.’

This solutions applies for following version of Microsoft Outlook:

  • Outlook 2007
  • Outlook 2010
  • Outlook 2013
  • Outlook 365
  • Outlook 2016
  • Microsoft Office (2013/365/2016)
Error InformationError Descripton
Error 0x800CCe05 Outlook Overview
0x800CCe05 Error Code Log
Avg. Time to Resolve Issue   40 mins
Difficulty Very Hard
Log Name: Microsoft Outlook <version> 7.19
Source: Incompatible System Files
Event ID: 5554
Operating System
  • Windows 7
  • Windows 8
  • Windows 10
Level: Application Level
User: <Outlook username>
  • Faulting Application Name: Microsoft Outlook <Application name>, version: 9.2.9452.45662, time stamp: 0×18676030
  • Faulting module name: Outlook  log.dll, version: 1.9.9483.74728
  • Exception code: 0xa01a691g
  • Fault offset: 0xd06e060a
  • Faulting process ID: 0×248
  • Faulting application start time: 0x14eeee2a56171022
  • Faulting application path: ~<userpath>
  • Faulting module path: ~C:\Program Files (x86)\Microsoft Outlook\<appname>
  • Report ID: e2d78f15-3636-29b5-6653-3417feg7b942

Cause of 0x800CCe05 Outlook Error Code

  • ISP issue
  • System Level Conflict
  • SSL Connectivity/Port Block Issue

Steps to resolve Outlook Error Code 0x800CCe05

Step 1: Check if your network is behind Proxy

1. In Start Searchbox type CMD
2. Click on CMD.
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 import proxy source=ie 

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. 

Step 2: Start Outlook in Safe Mode
1. Press Windows Key + R and Type “Outlook /safe”
2. Press OK.

In most cases Outlook error code 0x800CCe05 should be resolved by following above steps. If the problem still does not get resolved  that means the issue is due to the Core Microsoft Office files being corrupt. Contact Support by clicking here to resolve the issue.

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

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Last Updated: 21/01/2016
Solution ID: 659217

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