What is Offline Outlook Data File (.ost)

OST stands for offline storage table, an offline Outlook data file produced by MS Outlook. This offline folder file facilitates users to work offline when exchange environment is not available or you're not connected to Server.

OST File Format Specifications!

Developer Microsoft
Format Type Text and Binary
File Category Email & Database
MIME Type Unspecified
File Hex Signature 21 42 44 4E
ASCII code !BDNProgram
Supported Platforms Microsoft Windows and MAC.

Commonly, when you working with Exchange Server account, your mailbox data like mails, tasks, contacts, calendars and other items are send to and saved on Microsoft Exchange Server. You can deal with Outlook to store duplicate copy of your profile on your PC in an Outlook information document that is named an offline Outlook Data File (.ost). This permits you to utilize Cached Exchange Mode or to work disconnected mode when link with the Exchange server may not be feasible or needed. The .ost document is synchronized with the Exchange Server when network is reachable.

what is ost file

Offline storage table is a duplicate copy of the folders originates in your mailbox on the PC that is operating Microsoft Exchange. They make it feasible to take a folder from a Exchange server, work with the substance of the folder when you are not associated with the system, and afterward, when you are associated once more, update the folder and its relating server folder to create the substance of both folders indistinguishable. This procedure is identified as synchronizing folders.

You can append, erase, and modify the matter of an offline folder precisely as you can for a folder on a Exchange server. For instance, you can modify and transfer objects between folders, send messages that are incorporated into your offline Outbox, and view the substance of your disconnected public folder. In the interim, new mails are saved in your Inbox on the server, and other individuals may include, erase, and change things out in the public folders. You'll not know about these modifications on the server until you synchronize.

Quick Fix: Try Company’s Solution for OST to PST Conversion

The data that is synchronized incorporates the accompanying

Headers: (Only for Email), a header is an explanatory recognizer that gives the sender's name, the title of the message, the time when the mail was arriving, and the volume of the mail.

Full Items: A complete elements incorporates the header, mails with attachments, for example, installed items or pictures.

When you work disconnected mode, data that are synchronized are controlled by Send/Receive groups. By utilizing Send/Receive cluster, you can pick which folder are Synchronized and kept current so that when a contact with the server is unworkable or you work disconnected mode, you can keep on working with those things. You can likewise determine that updates to the Address Book be downloaded amid Synchronization.

In the event that you utilize an Exchange account, we suggest that you utilize Cached Exchange Mode. The greater part of the motivations to work disconnected mode are reduces when you utilize Cached Exchange Mode. The absence of network connectivity is practically straightforward to you since you can keep on working with your things whether you are associated with the PC that is running Exchange.

Related Article: What is PST File (Personal Storage Table)

As a matter of course, Cached Exchange Mode makes and uses an Offline Folder record (.ost) and afterward downloads and keeps up a synchronized duplicate of the items in all folders in your profile. You work with the data on your PC, and Outlook synchronizes the data with the server. At the point when connectivity with the Exchange PC is broken up, you can keep on working with your information. At the point when network is re established, changes are naturally synchronized, and the folders and items on the server and on your PC are indistinguishable once more.

With Cached Exchange Mode, you don't need to set up Send/Receive factions, pick folders that you need to be accessible disconnected mode, and after that keep those folders synchronized.

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