Microsoft Outlook is one of the most widely used email clients as it comes with a lot of exciting features. MS Outlook stores the email files and information in Personal Storage Table (PST) and Offline Storage Table (OST) files. As the name suggests, Offline Storage Table is the format which enables users to work in offline mode when Outlook is not connected to Exchange Server.
All the offline data is stored and created in OST format when working without connection with Exchange Server. The best part of Outlook is that it enables users to modify the content offline and save changes in OST file, which is synced once it is connected to the server.
Sometimes, users cannot connect to Exchange server when using Outlook due to various errors that are unidentified and unknown. There are several reasons responsible for this failure, such as hard drive failure, unexpected system shutdown, virus attack etc. which damage OST file. Once this file is corrupt or damaged, you cannot access it and sync with Exchange server properly. In that case, you should use scanost.exe which is an Integrity Check Tool that comes with Outlook for free.
By default, this tool is located at C:\Program Files\Microsoft Office\Office_version. It performs integrity check of OST file. The best thing is that this tool doesn’t alter the hierarchy of mailbox. All it does is scanning the corrupt OST mailbox and attempts to fix the synchronization problems in OST file. It recreates the header of data file and resets the structure of the file to repair offline data. Make sure Outlook is connected to the server to start this tool. Here’s how to use this tool –
- Close MS Outlook if it is open.
- Browse scanost.exe at C:\Program Files\Microsoft Office\Office_version
- Open scanost.exe
- It will prompt you to choose a profile as per your setting in MS Outlook. Choose a profile which consists of corrupt file.
- It has two options “Work Offline” and “Connect”. You have to click “Connect”.
- Choose the “Repair Error” checkbox to repair the error with this tool. It will create a scan log without repairing it if you don’t select this box.
- Click “Start Scan”
- Open MS Outlook to view the scan log. In “Deleted Items” folder, click “OST Integrity check”.
What If Scanost.exe Doesn’t Work?
The Deleted Items folder also contains the items that cannot be repaired by this tool. If the error cannot be fixed with this tool, it is better to download OST to PST Converter software. It is a simple and easy to use OST to PST Converter that comes with exciting features along with OST to PST conversion. With few clicks, you can convert corrupt OST files into PST files and other formats like Office 365, MSG, EML, PDF, and HTML. You may download free trial version which allows conversion of 20 items in each folder from OST to PST files. You can easily convert all the mailbox items, such as emails, contacts etc. without any error.