Make a resolution to the fatal error 80040806

While working with Outlook, you can meet up with a number of problems. There are many situations where the PST files get corrupt and you are unable to perform any tasks thereby. In that situation, an inbuilt inbox repair tool i.e. Scnapst.exe is suggested by outlook. This tool aims to repair the corrupted PST files but with certain limitations. While carrying out the repair process, you can receive various errors such as error 80040806 and more. It is also not capable to repair more than 2 GB outlook files. So, to overcome its limitations, PST Repair tool can be used.

Consider a scenario where you are using Scanpst tool but before the completion of the process, an error message get appeared on the screen:

Fatal Error: 80040806, dwErr=0
This error appears at the end of log, which also constitutes messages like:
Attempting to fix original file
Attempting to copy back BBT


The possible reasons behind occurrence of this error are:

  • Due to improper installation of Outlook application
  • Because of using a Unicode formatted PST file that is above 2 GB in size. The Scanpst tool is unable to repair exceeding 2GB PST files.


Use 2 GB truncation tool to minimize the size of damaged PST files as it reduces the size by a specific value. But the problem is that it can delete some important items while truncation

Next step is to bring Outlook up to date with latest updates to fix outlook crashing on startup

But still if the Outlook PST inbox repair tool, does not precede the PST files repair process, then you must use the PST Repair tool that will repair the corrupted outlook PST files by fixing all the corruption issues existing in them regardless of the reasons. It makes use of advanced mechanisms to restore the recovered files to the desired location efficiently and also by involving only few simple steps.

PST Repair Free Download

Software Requirement

Processor : Pentium Class
Operating System : Microsoft Windows 7 / Vista / 2003 / XP / 2000 / NT4 (SP6)
Memory : Minimum 256 MB (512 MB recommended)
Hard Disk : 50 MB of free disk space
MS Outlook : MS Outlook 2010 / 2007 / 2003 / 2002 / 2000
Internet Explorer : Version 5 or later