Convert OST to PST - Microsoft Outlook 2002 and all of its earlier versions limit the size of OST (Offline Storage File) to 2 GB. When the file exceeds its size limit, it becomes unusable and the stored data can not be accessed. When you attempt to connect with Exchange Server, the synchronization process could not complete successfully and the OST file can not be converted into PST. Thus you can not communicate with Exchange Server and access data from your mailbox. In such situations, you need to manually Convert OST to PST to retrieve data from it.

When the OST file exceeds the size limit, you might come across any of the below given situations:

1-    You can not load or open OST file at all.

2-    You encounter a number of error messages while you attempt to synchronize with Exchange Server.

3-    New data and items can not be added to the OST file.

4-    The synchronization of OST file with Exchange Server can not complete and thus it can’t be converted into PST.

Microsoft Exchange Server and Microsoft Outlook do not include any built-in tool to overcome the oversized OST problem. You may encounter some error message when it approaches 2 GB size limit. Once the size limit is exceeded, you can not do anything with OST file like sending or receiving mails, writing notes, accessing data and the like.

When you try to load the OST file, synchronize with Exchange Server or add new data to it, any of the following errors might occur:

1.      Errors have been detected in the file xxxx.ost. Quit all mail-enabled applications, and then use the Inbox Repair Tool.

2.      Task 'Microsoft Exchange Server' reported error (0x00040820):'Errors in background synchronization. In most cases, further information is available in a synchronization log in the Deleted Items folder.'

3.      Errors in background synchronization. In most cases, more information is available in a synchronization log in the Deleted Items folder.

Resolution

In order to sort out this issue, you need to Convert OST File into PST and then use it with Outlook 2003 or 2007. The conversion is possible through third party tools, known as OST Repair Tool.

These applications are specifically designed to convert entire unusable OST file into usable PST file. The resulted file can directly be used with Microsoft Outlook after importing it. These programs are completely easy and safe to use and thus allows you to Convert OST to PST in quick and effective way.

Stellar Phoenix Mailbox Exchange Desktop is the most effective solution to successfully convert Microsoft Outlook OST file to PST file. This software works well with Microsoft Outlook 2003, 2002, 2000, 98 and 97. It is designed for Windows 2003, XP, 2000, NT4 (SP6), ME and 98 SE.