This document explains how to fix Microsoft Outlook error 0x800401F 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:  Sending reported error (0x800401F): ‘Outlook data file cannot be accessed.

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 0x800401F Outlook Overview
0x800401F Error Code Log
Avg. Time to Resolve Issue   30 mins
Difficulty Hard
Log Name: Microsoft Outlook <version> 5.46
Source: Mail size Conflict
Event ID: 7207
Operating System
  • Windows 7
  • Windows 8
  • Windows 10
Level: Administrator
User: <Outlook username>
  • Faulting Application Name: Microsoft Outlook <Application name>, version: 3.7.5702.23237, time stamp: 0×59161245
  • Faulting module name: Outlook  log.dll, version: 1.6.2133.21977
  • Exception code: 0xd03f880d
  • Fault offset: 0xd01a883e
  • Faulting process ID: 0×043
  • Faulting application start time: 0x06gecc1b10859700
  • Faulting application path: ~<userpath>
  • Faulting module path: ~C:\Program Files (x86)\Microsoft Outlook\<appname>
  • Report ID: e9g12e61-1479-72c1-1562-4743ceg3c182

Cause of 0x800401F Outlook Error Code

  • Internet connectivity issue
  • Microsoft Outlook internal Application Conflict

How to Resolve Outlook Error 0x800401F

Step 1: Check System Integrity

1. In Start Searchbox type “CMD” (without quotes)
2. Click on CMD
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: Start Outlook in Safe Mode:
1. Hold Windows Key + R and Type “Outlook /safe”
2. Click OK.


In most cases Outlook error code 0x800401F should be resolved by following above steps. If however the issue still persists it means there is some issue with the Microsoft Outlook core system files 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.

Rate this Solution
Did this article help you?
17   0      
Last Updated: 13/01/2016
Solution ID: 887714

  • 0x800CCC1A Outlook Error Code – How to Fix Steps
  • Outlook Cannot Connect To Your Outgoing Smtp Email Server Hotmail – How to Fix Steps
  • Unable to send emails from Outlook after installing Windows 10 – How to Fix Steps
  • Outlook Not Sending Emails – How to Fix Steps
  • Unfortunately, Has Stopped – How to Fix Steps
  • Outlook 2016 not showing Emails Error Code – How to Fix Steps
  • 0x8004115 Outlook Error Code – How to Fix Steps
  • Outlook Error Synchronizing Folder – How to Fix Steps
  • Outlook Cannot Logon. Verify You Are Connected To Network And Using Proper Server And Mailbox Name – How to Fix Steps
  • Outlook Cannot Connect To Your Outgoing Smtp Email Server Comcast – How to Fix Steps

    April 7th, 2016

    Posted In: Microsoft Outlook

    LiveZilla Live Chat Software