This document explains how to fix Microsoft Outlook error code 0x8DE00001 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:
Server Error: 4102
Server: ‘’
Windows Live Mail Error ID: 0x8DE00001

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 0x8DE00001 Outlook Overview
Total Incidents Recorded 635115
Issues Resolved (Percentage) 95%
Also Known as

Outlook fehler code 0x8DE00001, foutcode 0x8DE00001, fejlkode 0x8DE00001, code d’erreur 0x8DE00001, codice di errore 0x8DE00001, feil kode 0x8DE00001, cod de eroare 0x8DE00001, código de error 0x8DE00001

0x8DE00001 Error Code Log
Avg. Time to Resolve Issue   50 mins
Difficulty Hard
Log Name: Microsoft Outlook <version> 3.43
Source: SSL Conflict
Event ID: 1133
Operating System
  • Windows 7
  • Windows 8
  • Windows 10
Level: System Level
User: <Outlook username>
  • Faulting Application Name: Microsoft Outlook <Application name>, version: 4.9.9044.05687, time stamp: 0×78274330
  • Faulting module name: Outlook  event.dll, version: 5.9.6735.80017
  • Exception code: 0xd01a703a
  • Fault offset: 0xe02c542f
  • Faulting process ID: 0×250
  • Faulting application start time: 0x18bdfa5f54549863
  • Faulting application path: ~<userpath>
  • Faulting module path: ~C:\Program Files (x86)\Microsoft Outlook\<appname>
  • Report ID: e6g65d21-2752-61e5-2797-1564cef8e656

Cause of 0x8DE00001 Outlook Error Code

  • Slow ISP Connection
  • Microsoft Outlook internal Application Conflict

How to Resolve Outlook Error 0x8DE00001

Step 1: Temporarily Disable any installed 3rd Party Antivirus:

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: Start Outlook in Safe Mode:

1. Hold Win Key + R. Run Dialogue Box will open up.
2. Type “Outlook /safe” and Click OK.

In most cases Outlook error 0x8DE00001 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 Outlook Support Representative 24/7 by clicking on the Chat button.

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Last Updated: 13/01/2016
Solution ID: 171164

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