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How to rectify Inbox Repair Tool Error '80040900'?

MS Outlook is a great application of MS Office package which is designed to cater the needs of business professionals and to store there valuable data in a safe and secure way. MS Outlook stores the local copies of different kinds of data like emails, messages, contacts, notes, journals, appointments, tasks etc. in a special file called PST (Personal Storage Table) file. But this PST file is very prone to corruption due to which data stored in it gets corrupt very often. In order to repair the corrupted PST file of MS Outlook Microsoft has provided an inbuilt tool with MS Office package called Scanpst.exe or Inbox Repair Tool. This tool is very much efficient in repairing most of the PST corruption issue but not all of them. That’s the reason why the Inbox Repair tool is not able to repair the severe corruption issues of the PST file.

Let’s consider a situation which exemplifies the failure of Scanpst.exe where when the PST file gets corrupted and you tried to use Scanpst.exe tool it fails instantly with an error message and the corrupted PST remains unaffected. The error message is mentioned as below –

"Fatal Error 80040900"

Cause of Inbox Repair Tool Fatal Error 80040900

There can be any reason behind the failure of Scanpst.exe tool but the most likely would be the PST oversized issue i.e. Outlook PST file must be larger than 2GB and the Inbox Repair Tool cannot fix an ANSI formatted PST file which is corrupted due to the oversized issue or 2GB file size limitation.

Solution to Repair Scanpst.exe Tool Fatal Error 80040900

Since the Scanpst.exe failed due to the oversized issue of PST file, so as a first step to resolve this issue you should try to lower the PST size by using Microsoft’s PST Crop Tool (Pst2gb.exe) to remove or truncate some of the data from the PST file. But before performing this action it is recommended to backup the entire PST file because in these process you may loose some of the valuable data from the PST file. Or in order to repair the corrupted PST file you can also use any third-party software like PST Repair tool which will effectively scan the entire PST file using its advanced and powerful mechanism to find the bugs and repair them efficiently. This software is so powerful that it can almost repair any logical PST issue just in few clicks. So, simply use this software and repair inbox repair tool error 80040900 in seconds.

Scanpst.exe failed? Try Outlook PST Repair

Install the software with quick installation wizard. Just follow the 4 simple steps to successfully install the Outlook PST Repair.

Step 1
Launch the Outlook PST Repair from the desktop shortcut. And select the corrupted PST file.


Step 2
Click Next and follow the on-screen instruction to finish it. No need to Worry! Your Outlook.pst is in Hand of Professional.

Outlook PST Repair has very advance scanning alogorith as compared to the Scanpst.exe. You will see the difference in result, once the scanning is over.


Step 3
Once Scanning process is completed, Outlook PST repair will show the previews of all the recoverable components.

Step 4
After viewing the lost folder in the recovered item list. Go for the Licence key to save the pst file..


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Yes, it runs faster than the scanpst.exe and completely recovered all my lost emails & Tasks saved in my Ouloook. One Word - Use Outlook PST Repair instead of Scanpst.exe

Simsoe Yank

I really wanna say "Thank you", coz Outlook PST repair for restoring all my lost emails back. Keep up the Good Work!

Hemlon Gter

I tried SCANPST.exe a Inbox Repair Tool, and got nothing. But Outlook PST repair recovered all my emails back.



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