BitRecover
OST to PST Wizard

No need to worry at all. Our software can easily solve this issue. Just download and install this migration tool on your system and quickly view OST file in Outlook. Using this software, you can convert Exchange OST to Outlook PST inclusive complete and accurate information.

No there is no limitation of file size. You can convert any number of OST files with the help of this utility. But the trial version will not work as it can convert only 25 files. To convert unlimited OST to Outlook PST, you need to buy full version.

You can easily import OST file to MS Outlook 2016 and other previous editions using this software. Below are following steps to import OST file to Outlook 2016.

1. Download and install this tool on your system
2. Select source file by going on Select option present on the right hand side in the application
3. Choose destination path by clicking on Save As option
4. Click on convert
5. File conversion successfully completes
6. Now run MS Outlook and choose Import Outlook Data File option to import converted PST file

Users can manually reduce the size of OST file in Outlook following the steps:

1. Firstly, delete all the irrelevant data from OST file
2. Browse the folder view and press CTRL + 6 to open folder list
3. Under the navigation bar, right click on Deleted Items folder
4. Select Empty Folder tab
5. Next, click on File option
6. Now, browse Accounts Settings >> Data Files
7. Click the data file (OST) that has been reduced in size
8. Select Compact Now option to compress the selected offline OST file

If while using two OST profiles, access to one of the profiles is denied then it is probably because of - lost integrity, consistency issues, or so. When a new profile is created, you may have unknowingly performed logical errors which results in generating errors for the OST profile. Moreover, this could also be a result of incorrect OST file path or when the file is - Read-Only marked.

In order to resolve this issue, you can apply the given fixes:

1. Run MS Outlook client as an administrator
2. Check whether the file attributes of OST are marked as Read-Only and uncheck the option, if selected
3. Confirm that full access controls are permitted to the user - Check Security for OST file Properties
4. Try renaming the OST profile and reopen it in Outlook
5. Lastly, you can check and resolve the integrity issue for the OST profile if it exists by using Scanpst.exe tool

Fixing corrupt OST files was possible with the integrity check and inbuilt repair tool - scanost.exe but only until Outlook 2010. Since Outlook 2010 came out, the provision of this inbuilt utility was discontinued.

In order to fix a corrupted OST file for Outlook 2013 version, users are suggested to either rebuild it or repair it using a commercial utility. Using Scanpst.exe as an alternative to scanost.exe is not recommended (as stated in a few forums online) as this further worsens the condition.

Offline Storage Table (.ost) file is an offline Outlook data file. It is created automatically by Outlook offline folder feature. OST file format is used by Microsoft Exchange Account that allow users to access data even when not connected to the server. An OST file contains all Exchange data items such as emails, calendars, contacts, tasks, etc. A user is allowed to update or modify any data in offline mode and it will synchronize with Exchange Server automatically as connection is turned ON again.

The location of OST file varies according to the version of the MS Outlook. Based on the Outlook version the location of OST files are mentioned below:

Outlook 2010 and upper editions :
In Windows Vista, Windows 7/8 /8.1/ 10 : drive:\Users\user_name\AppData\Local\Microsoft\Outlook
In Windows XP : drive:\Users\user_name\Local Settings\Application Data\Microsoft\Outlook

Outlook 2007
In Windows Vista : drive: \Users\user\AppData\Local\Microsoft\Outlook
In Windows Server 2003 or Windows XP : drive: \Documents and Settings\user\Local Settings\Application Data\Microsoft\Outlook

Follow the steps mentioned below to rename OST file

1. Firstly, exit MS Outlook on your system
2. Then, go to the Control Panel >> open Mail
3. Select Data Files tab >> choose Exchange Account >> select Settings
4. Choose the Advanced tab and uncheck the checkbox ‘Use Cached Exchange Mode’
5. Select Outlook Data File Settings >> click on Disable Offline Use
6. Browse and rename the file >> choose it as the new OST file >> click Ok
7. Check the checkbox ‘Use Cached Exchange Mode’>> click Ok
8. Now, restart your Outlook email application

When OST file become corrupted beyond its possibility of repairing it or even sometimes users do not want to repair their OST file. In such situation, the OST files can be deleted. To delete the corrupt OST file, follow the mentioned steps to delete the OST files:

1. Firstly, quit Outlook email client if it is running on your system.
2. Click Start and choose the Run option.
3. In the Run window, enter the following command and click OK
4. "%APPDATA%\Microsoft\Outlook\"
5. Now, in the Explorer Window, locate the OST data file, which you want to delete. Choose it and click on Delete key from your keyword.