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Inbox Repair Tool (scanpst.exe)

Upon starting Outlook I get the message that errors have been detected and that I need to run the Inbox Repair tool.

Where can I find that?

The Inbox Repair Tool can be started with `scanpst.exe`. The location of this file is different for almost every version of Outlook and it sometimes also depends on which language of Outlook you have installed and even if you have it installed on a 32-bit version of Windows or 64-bit version of Windows. There has to be some sort of price for this level of inconsistency

You can use OutlookTools (free) to locate it for you. Below you’ll find an overview of the default locations of `scanpst.exe` throughout the versions of Outlook.

When you need step-by-step instructions how to use scanpst.exe see: Using the Inbox Repair Tool (scanpst.exe).

Outlook 2016 / Office 365

 32-bit Windows C:\Program Files\Microsoft Office\Office16 64-bit Windows C:\Program Files (x86)\Microsoft Office\Office16 64-bit Outlook C:\Program Files\Microsoft Office\Office16 Click-to-Run C:\Program Files\Microsoft Office\root\office16

Outlook 2013

 32-bit Windows C:\Program Files\Microsoft Office\Office15 64-bit Windows C:\Program Files (x86)\Microsoft Office\Office15 64-bit Outlook C:\Program Files\Microsoft Office\Office15 Click-to-Run C:\Program Files\Microsoft Office\root\office15

Outlook 2010

 32-bit Windows C:\Program Files\Microsoft Office\Office14 64-bit Windows C:\Program Files (x86)\Microsoft Office\Office14 64-bit Outlook C:\Program Files\Microsoft Office\Office14

Outlook 2007

 32-bit Windows C:\Program Files\Microsoft Office\Office12 64-bit Windows C:\Program Files (x86)\Microsoft Office\Office12

Outlook 2003

 32-bit Windows C:\Program Files\Common Files\System\MSMAPI\ 64-bit Windows C:\Program Files (x86)\Common Files\System\MSMAPI\

Outlook 2002/XP

C:\Program Files\Common Files\System\MAPI\<locale ID>\scanpst.exe

Outlook 2000

C:\Program Files\Common Files\System\MAPI\<locale ID>\NT\scanpst.exe

Outlook 97 / Outlook 98

C:\Program Files\Common Files\Windows Messaging\scanpst.exe

Notes

Note 1:
The <locale ID> is a number to identify your language of Office. You can find an overview of the numbers
here. You need to look in the “LCID Dec” column for the correct number.

Note 2:
When you connect to an Exchange server and need to check your local cache (ost-file) for errors you’ll need to run scanost.exe. You can find this in the same location as scanpst.exe except for Outlook 97/98/2000 and Outlook 2010. These versions of Outlook don’t have the scanost.exe feature. In this case, rename the ost-file to .old and Outlook will rebuild a new cache from the Exchange mailbox.

Note 3:
If scanpst.exe is unable to fix your pst-file, then it is too badly corrupted. You can then try repairing or salvage recoverable items via a 3rd party recovery tool such as DataNumen Outlook Repair (for pst-files) or DataNumen Exchange Recovery (for ost-files).
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