I am using Outlook 2007. My .pst file is less than 1G, and it is corrupted. As the title says, scanpst.exe fails to repair it. Every time it gives with Fatal Error: 80040818.

Hi Jack39Doherty,

Yes, its a worst condition if scanpst.exe is not able to repair the PST data file. Generally the fatal error 80040818 arise due to the incompatibility between different versions of MS-Outlook or file formats (Unicode and ANSI).

For more: http://support.microsoft.com/kb/830336

But in your scenario, I dont think that there is any incompatibility issue as the Outlook 2007 supports the 20GB (By default in Unicode) file limit. So, I guess there is no any solution for you apart from choosing to any third party Utility.

Google it and choose the best.

Note: But, I found one of the article to handle corruption issues When scanpst does not work for you: http://www.en.pstemailrecovery.com/blog/what-to-do-if-scanpst-does-not-work.html

Thanks

Clark Kent

• Marked as answer by Steve FanMicrosoft contingent staff, Moderator Monday, May 05, 2014 8:39 AM
• Edited by Clark445Kent Tuesday, April 28, 2015 9:37 AM

Well, this shows that Outlook.PST file is corrupted and that's why you are getting error. To resolve this issues:

1. Restart Outlook 
2. Configure your server connection
3. Try to create new profile
4. If not, then use Inbox Repair Tool to repair damaged Pst file

Even if you are getting similar error, then try Outlook Repair Toolbox. It performs thorough scanning of Outlook to repair damaged PST file and make it completely accessible. Now, you can easily send emails without any error. Read more: http://www.pst.repairtoolbox.com/

• Marked as answer by Jack39Doherty Monday, May 05, 2014 3:56 PM

In order to recover lost Outlook data you can use a good pst repair tool which can solve the issue for you. here is the list of some good pst data recovery software available to with their pros and cons http://www.softwaredemons.com/comparing-3-best-outlook-pst-recovery-software/

I am using Outlook 2007. My .pst file is less than 1G, and it is corrupted. As the title says, scanpst.exe fails to repair it. Every time it gives with Fatal Error: 80040818.

Try any third party Outlook Data Recovery software. Comparing the best Outlook data recovey tools 
here http://www.comparisonandreviews.org/outlook-mail-recovery.html