Outlook is the most popular email client as it offers great reliability and flexibility to perform a professional or personal email communication efficiently. Unlike other email clients, it enables users to work even in offline mode when connection between Outlook and Exchange server gets disrupted due to any possible reason. And, it is possible because of a special kind of file known as offline storage file or OST file. These OST file stores your whole offline work in its database for a short time period. Sooner, when connection gets re-established between Outlook and Exchange server whole OST data get synchronized with Exchange server database.
With this facility, there are few glitches also which arise when OST file undergoes any corruption issues. As, they contains Outlook mailbox items such as emails, notes, journals, calendar, schedules etc. so OST corruption leads to inaccessibility of OST file along with all contained email items. A long duration connection disruption is very harmful for integrity and consistency of OST file. There are several reasons which make OST file inaccessible which are divided into two main categories:
1) Physical or hardware reasons:
- Corruption of storage media (i.e. bad sectors) leads to inaccessibility of OST file data.
- Networking fault usually leads to inaccessibility of OST file and thus orphaned OST file created.
- Sudden or unexpected system shut-down can corrupt OST file.
2) Logical or software reasons:
- Malicious virus attack causes corruption of OST file.
- Wrong selection of OST file recovery tool can put your data in even more worst condition.
- Synchronization interruption due to any reason.
- Improper shut down of Outlook client can damage Outlook OST file.
- Hidden viruses of other software files may lead to serious data loss.
Resolution 1:
Inaccessibility of OST file may results a great data disaster situation for Outlook users. You find yourself unable to access your mailbox data and other email items from orphaned OST file. In such cases, consistency and integrity of OST to PST file gets interrupted. To get rid of integrity issues, you can create a new OST file by following given steps:
Create a New OST file:
- Close Microsoft Outlook.
- Click Start, and then click Control Panel.
- Click Switch to Classic View if you are using Windows XP or higher versions.
- Double-click Mail.
- In the Mail Setup dialog box, click Show Profiles.
- Select one of the incorrect profile in the list and click Remove to remove it.
- Repeat 6.6 until all incorrect profiles have been removed.
- Click Add to create a new profile and add email accounts according to their settings on the Exchange server.
- Start Outlook and re-synchronize your Exchange mailbox, your problem will get resolved.
Resolution 2:
Other possible solution of OST file corruption is use of OST integrity check tool (Scanost.exe). It is very popular utility for resolving issues related to OST file integrity and consistency. To use the OST Integrity Check tool, your Outlook must be connected to your Exchange account. The tool can scan your mailbox folders and items. Before running this tool, you need to change your Outlook startup settings temporarily. It scans your infected, corrupt or orphaned OST file and tries to repair OST file. The OST Integrity Check tool (Scanost.exe) is installed when you install MS Outlook and it is located at: drive:\Program Files\Microsoft Office\OFFICE12. However, it can fix only few minor errors of your corrupt OST file.
In case of severely corrupted OST file, you have to choose a third party tool like Kernel for OST to PST conversion. It is a much powerful and popular tool for repairing and recovering OST file data. It converts OST file into easily accessible PST file. For More Information... www.osttopst.kerneldatarecovery.com
Summary:
Inaccessibility of OST file is now a common problem among Outlook users. Try inbuilt utilities and eliminate OST issues. If they are not useful then look for a professional third party tool and get desired result.
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