Are you looking for the best way to convert OST to PST file format in Outlook? here is the manual and alternate solution to export OST file to PST format.

2. Topic Scenario
 Introduction to MS Outlook
 Data Files used by Outlook
 When will OST File be Created?
 When will PST File be Created?
 Need to Convert OST to PST?
 How to Convert OST File to PST?
 Alternate Solution
 Best Way to Convert OST to PST
 Conclusion

3. Introduction to MS Outlook
Microsoft Outlook is a widely used email client which has designed to
manage email messages, calendars, contacts, tasks, journals and all
personal information of a user. it’s a popular email client now a days to
communicate with others for business meetings. The first version of MS
Outlook 97 has introduced on January 16, 1997.
It has been seen that all newer versions of MS Outlook 2000, 2002, 2003,
2007, 2010, 2013 & the latest 2016 version has overcome the limitations of
their previous versions.

4. Data Files used by Outlook
There are mainly two types of data files used by Microsoft Outlook
to hold users data.
• OST (Offline Storage Table)
• PST (Personal Storage Table)
Creation of Outlook data file (OST or PST ) depends on your Outlook
account configuration whether it is created by using IMAP or POP.

5. When will OST File be Created ?
As we know, OST file is created when Outlook is used in conjunction of
Microsoft Exchange Server and when“Cached Exchange Mode” of
Microsoft Exchange Server is enabled.
Hence, if a user wants to keep a copy of its Microsoft Exchange account in
MS Outlook, In such scenario all the personal information of that account
like email messages, calendar, journals etc are saved in OST file.
This type of configuration offers you an additional option which will help
you to work offline in absence of Exchange server downtime and later when
the connection is re-established then the OST file is synchronized with the
Exchange Server.

6. When will PST File be Created?
The PST file also contains the similar information's like OST file, But the
creation of PST file in user’s local system varies from the creation of OST file.
If a home user selects the protocol IMAP or POP on MS Outlook 2003 to
2010, the PST file will be created and if their is Outlook 2013 or 2016 version of
MS Outlook installed on User’s local System and the Outlook account’s
configuration protocol is POP then the PST file will be created.
Note: In Both Outlook 2013 and 2016 versions, the OST file will be
created if Outlook is configured using IMAP.

7. Need to Convert OST to PST?
Since, the MS Outlook doesn’t offer you the option to directly import and
open your OST file. So, If a user wants to import his/her OST file to
Outlook then it is recommended to firstly convert OST to PST and then
using Outlook import option to open PST file.

8. How to Convert OST File to PST?
Note: The above procedure will only work if your original Outlook profile is
connected with Exchange Server. Otherwise you cannot convert OST file to
PST file format or you need to try alternate solution.
• Go to Microsoft Outlook.
• Click on File >> Open & Export
• Click on Import/Export option under Open.
• In Import and Export Wizard window, Select Export to a File”then
click on “Next”.
• Now, Select Outlook data file (.pst) option in Export to a File
window and then click on Next
• Select the folder to export from and check“Include sub-folders”
and click on Filter to export desired items and click on Next.
• Now, select the destination folder to save exported items and Click on
Finish to complete export process.
To convert the OST file Into PST format, you should follow the below steps:

9. Alternate Solution
Apart from above mentioned solution, an alternate solution is suggested
to Export OST file to PST without Exchange Server environment ie. OST
to PST Converter.

10. Best Way to Convert OST to PST
• Repair highly corrupted OST file of all MS Outlook Version
• Convert OST file into PST, EML & MSG format
• Option to Export selected Emails from OST file to PST
• Split converted Oversized Outlook PST file by size
• Extract OST items like email, calendar, contacts etc items to PST

11. Conclusion
It’s common seen error faced by Outlook user as OST file become
orphaned, Hence, one can’t access their OST file using this manual
solution. So here, the alternate solution is the best option to export OST
file into PST file format, As the Software doesn’t require for MS Outlook
installation to open an orphaned OST file.