Click Folder Options. Click the View tab. In the Advanced settings box: Under Files and Folders, uncheck the Hide extensions for known file types box. Under Hidden files and folders, click the Show hidden files, folders, and drives button. Click OK. Outlook stores backup files containing email, calendars, contacts, tasks, and notes on your ... Offline OST to PST Converter kann E-Mails, Kontakte, Termine und andere Daten aus *.OST-Dateien als MSG-Dateien speichern. Die Software hilft, alle Daten aus OST-Dateien in MSG-Dateien zu konvertieren und als MSG zu speichern. Der Kunde kann die *.msg-Dateien später mit Drag and drop in die meisten E-Mail-Client-Programme importieren: …ขนาดของไฟล์. pst ที่แปลงแล้วจะแสดงขนาดจริงของข้อมูลที่เก็บไว้ในไฟล์ ost หากคุณไม่ได้จัดทำคลังข้อมูลและห้ามเริ่มเครื่องมือล้างข้อมูลอย่าง ...The OST to PST Converter recovers the emails with the metadata information. Message headers, subject, to address, from address, date & time, etc. from OST file gets converted into PST format. The background images, attachments, meeting schedules, etc. are properly exported from inaccessible OST file and export them to Outlook PST file.Stellar Converter for OST Software Review: In this video tutorial, let me show you how you can easilyconvert encrypted Offline OST into the usable PST format... If you use an Microsoft 365, Exchange, IMAP, or Outlook.com account, a copy of your mailbox is stored in an Offline Outlook Data File (.ost). To reduce the size of your Outlook Data File (.pst) or Offline Outlook Data File (.ost), you can manually compact the data file. Select your version of Outlook below to see instructions on how to reduce ... Rename the file back when Outlook is closed and then open Outlook again. Export your Tasks to a pst-file, close Outlook and rename the ost-file to .old again. Also see: Don’t risk losing your Contacts and Calendar when using IMAP in Outlook 2013. Robert Sparnaaij [MVP-Outlook] https://www.howto-outlook.com. https://www.msoutlook.info.Easy Steps to Convert the OST File to PST without Outlook: Run the Microsoft OST to PST Converter on your system. Select an OST file from your local machine. Click on the Next button and preview OST file mailboxes. Select OST email items and click on Next. Now, choose Save As options PST from Software Wizard. Learn how to work with offline Outlook Data Files (.ost) that are used for Exchange accounts or Outlook.com. Find out how to re-create, open, or import .ost files in Outlook for Microsoft 365, Outlook 2021, Outlook 2019, or Outlook 2016. Convert OST files to PST format online with Aspose.Email, a cloud-based service that supports various file formats. No installation or registration required, just upload your …Convert PST files to OST format online. Our PST convertor allows you to convert several PST files to OST format online for free. Convert PST or any other supported file formats. No third-party software installation is required. Web-based application is fast, robust, easy-to-use and absolutely free. After you convert the file from OST to PST, in addition to the link to download the result, you can also fill out a feedback form. Please take a look at the conversion results and let us know if you want any extra features or find any bugs. Our libraries that we use to convert OST to PST contain a lot of fine-tuning options. Apr 20, 2022 · You can convert offline IMAP, Outlook, or Exchange OST files to PST format using this utility without any additional work. The software offers a user-friendly interface that allows even non-technical users to convert OST files to PST files. You can convert 50 items from an OST file to PST format during the free trial time. We would like to show you a description here but the site won’t allow us.OST and PST files are file formats for storing data on Microsoft Outlook, such as emails, attachments, contacts, notes, etc. Microsoft Outlook creates either file …How to Change OST to PST Manually for Outlook 2019, 2016, 2013, 2010...Step 1: Manual Steps to Change OST File Format to PST1. Open Outlook and go to File me...1. Find your local .pst and .ost files. Outlook saves .pst and .ost files in a variety of different locations. Depending on what type of account you have, see the locations for Outlook 2007, Outlook 2010, and Outlook 2013, 2016 for example. 2. Open your .pst and .ost files. Download OST PST Viewer and browse for the .pst and .ost files.A TrustVare OST to PST Converter is a software application that can convert an offline Outlook data file (OST) to a personal storage table (PST) file. PST files are a standard format for storing Outlook data and can be opened and used with any version of Outlook. OST files, on the other hand, are only accessible with Outlook when …Mar 21, 2024 · Converting OST files to PST using the Outlook Import/Export feature is a straightforward process that allows you to export OST to PST without the need for third-party software. This method is particularly useful for users who have access to the original Microsoft Exchange account associated with their OST file. AnyConv เป็นตัวแปลง OST เป็น PST ระดับห้าดาว ⭐ คุณสามารถแปลงไฟล์ ost เป็นรูปแบบ pst ออนไลน์ได้ 👍 รวดเร็วและฟรี 👍 ไม่จำเป็นต้องติดตั้ง ... 我们的 OST 到 PST 转换器使用云存储来存储转换结果。. 您可以立即下载转换后的文件、通过电子邮件发送或简单地将链接复制到该文件。. 但请记住，您的文件仅在云中存储 24 小时！. 我们不会以任何方式传播您的文件的链接，我们不会将它们提供给第三方等 ... The OST to PST exporter tool is applicable to split resulting PST file into required size while transferring data from OST file to PST format. This is an optional choice that can be used for creating multiple PSTs from single heavy Microsoft OST file.SysTools OST to PST converter is a reliable OST converter software to convert inaccessible or orphaned OST files of Outlook 2019, 2016, 2013, 2010, and below versions into PST format. The software can convert single or multiple OST files simultaneously into PST format. It can also convert encrypted OST files with precision.This OST to PST Converter software possesses two options to convert single and multiple OST files within one attempt. On the main screen of the software you will find 'Select File' and 'Search File' option. Choose the ‘Select File’ option to convert one OST file at a time. But for bulk conversion of OST files at a time, you can select the ...Oct 23, 2023 · 1. Stellar Converter for OST. Stellar is another prominent software company focused on data recovery, email tools, and data erasure . It offers an advanced OST to PST converter... Stellar Converter for OST offers quick conversion of Outlook OST file to PST. It extracts complete mailbox objects along with emails, contacts, attachments, calendar entries, etc., and saves them in a newly created PST file. Additionally, this powerful tool facilitates you to convert OST file, when the OST is corrupt or become inaccessible. PST stands for Pacific Standard Time. IST is known as India Standard Time. IST is 12.5 hours ahead of PST. So, when it is it will be . Other conversions: PST to Amsterdam Time, PST to Stockholm Time, PST to Beijing Time, PST to Honolulu Time, PST to Doha Time. Getting Started. 1 Add locations (or remove, set home, order) 2 Mouse over hours to ...Method 2: Convert OST Using Archive Method to Move Mailbox into PST. Step 1: Firstly, open your Microsoft Outlook application. Step 2: Click on the “File” tab and then the Archive option. Step3: Now choose the desired file/folder to archive. Step 4: Browse the location to save the archived file. Step 4: At Last click Finish.Aug 19, 2019 · Step 2: Method 2: Professionally Convert OST to PST. Discover the top tool available for professionally transferring OST to PST file format. Opt for the Aryson OST to PST File Converter for a faster and more dependable process. This software comes equipped with advanced features and filters, including the ability to remove duplicate items. You can begin by opening the OST Exporter PST Tool and selecting “Add File.”. Choose the output format – Outlook PST file from – Menu – Saving Option after adding OST file. To save the produced file, navigate to the desired location on your computer. Export is the action of removing something from the system.Some accounts (IMAP, Microsoft Exchange Server, and Outlook.com) use an offline Outlook Data File (.ost). This is a synchronized copy of the messages saved on a server. It can be accessed from multiple devices …At the top of the ribbon in classic Outlook, choose File. Choose Open & Export > Import/Export. Choose Export to a file > Next. Click Outlook Data File (.pst) > Next. …How to Convert PST to OST files in Outlook 2010: Step 1: Open Outlook 2010 and click on “File” then “Open” and then “Import”. Step 2: From the “Import and Export Wizard” tab, select “Import from another program or file” and click on “Next”. Step 3: Select “Outlook Data File (.pst)” from the “Import a File” tab ...I have an old PST file with old emails etc that I want to merge into my live OST file but can't see how to do this. Drag and drop doesn't work saying "Exchange ActiveSync doesn't support what you are trying to do". Thanks for reading. Answer. Roady [MVP]I have an old PST file with old emails etc that I want to merge into my live OST file but can't see how to do this. Drag and drop doesn't work saying "Exchange ActiveSync doesn't support what you are trying to do". Thanks for reading. Answer. Roady [MVP]7. If you have a backup of the machine, you can fire up outlook with the 445MB OST in place and remove the network cable. Outlook will start in "disconnected mode" if you are lucky, and you should have access to the entire OST. You can then create a new PST, and copy everything in using the traditional drag and drop Outlook GUI. The fastest way to open the folder where your Outlook Data Files (.pst and .ost) are saved is to do the following: In Outlook, select the File tab, then on the Info tab, select Account Settings > Account Settings. Select the Data Files tab, select an entry in the table, and then click Open Folder Location. SysTools OST to PST Converter: SysTools OST to PST Converter is a utility that allows for complete scanning, recovery, and extracting of offline OST files/items. With an easy-to-use interface, it ...Rename the file back when Outlook is closed and then open Outlook again. Export your Tasks to a pst-file, close Outlook and rename the ost-file to .old again. Also see: Don’t risk losing your Contacts and Calendar when using IMAP in Outlook 2013. Robert Sparnaaij [MVP-Outlook] https://www.howto-outlook.com. https://www.msoutlook.info.Our OST convertor allows you to convert several OST files to PST format online for free. Convert OST or any other supported file formats. No third-party software installation is required. Web-based application is fast, robust, easy-to-use and absolutely free.This software recover OST file from any kind of corruption issues in a much secured manner and converts it to ready to use PST file format. "To add feather in its hat" tool has been developed in a way that it supports all versions of Outlook including 2019. This tool is made especially to provide guaranteed results in OST file repairing process.Step 1. On your computer, download, install, and launch the Remo OST to PST Converter tool. Step 2. Choose either Open OST File (if you want to locate the OST file manually) or Find OST File (if you want the software to locate the OST file automatically) before clicking Next. Step 3.Open your data from Exchange (.OST file) in Microsoft Outlook. If you are looking for a freeware that will convert Outlook OST file to PST format quickly and easily, OST2 is …Launch the OST to PST Converter tool. Click on taskbar to open the OST file. After that, click on the Browse button. Now, select the OST file you wish to convert into PST file format. Click Open to confirm the file selection. Select the scanning mode between Standard and Advanced depending upon the level of corruption.OST Converter Tool - All Screenshots. Understand The Steps to Convert OST to PST File Format. 1. Download OST Converter Software. Launch this OST to PST converter on your system wihtout any limitation. 2. Add Outlook OST File. Software allows users to either browse OST file or Search OST file from system and add. 3. Stellar OST to PSTコンバーターでOSTファイルをPSTファイルに変換する. ステップ⒈ 変換したいOSTファイルを選択します。. ここで構成済みプロファイルの一覧表示のウィンドウが表示されます。. ここで「 プロファイルを一覧表示 」をクリックすると、自動的に ... Use Free OST to PST Converter to export OST file to PST Online. Outlook OST2PST freeware allow users to export offline OST emails, calendars, task, contacts, etc. to PST. With the full version of the free online portal, users can also migrate OST data to EML, MSG & Office 365 and download it in desired format.Steps to Import PST to OST in Outlook 2013 & 2016. Launch Outlook application in your system. Click on File>>Open & Export >> Import/Export. Now, select the Import from another program or file from the wizard and click. Select Outlook Data File (.pst) from the newly opened window and for further processing click on the Next.Create a new PST file. Go to the OST file, select and copy all the contents to be converted with your mouse. Go back to the new PST file, then paste all the contents into the PST file. That will do the conversion. Second, if you can access the Exchange server containing the account data for the OST file, then you can use Export-Mailbox command ...SysTools OST to PST Converter is a powerful conversion tool that migrates Exchange OST files to Outlook PST format, regardless of version. The software supports both recent and dated versions of Outlook, including the old 2010 and 2007 editions. SysTools OST to PST Converter is capable of converting OST files to other formats as …SysTools OST to PST Converter is the premier choice of Microsoft MVPs for converting inaccessible, orphaned, offline, and corrupted OST files into Outlook-supported PST format. It can easily convert emails, calendars, contacts, and tasks in MS Outlook even when the Exchange Server has crashed or the mailbox dismounted.SysTools OST to PST Converter is a powerful conversion tool that migrates Exchange OST files to Outlook PST format, regardless of version. The software supports both recent and dated versions of Outlook, including the old 2010 and 2007 editions. SysTools OST to PST Converter is capable of converting OST files to other formats as … After you convert the file from OST to PST, in addition to the link to download the result, you can also fill out a feedback form. Please take a look at the conversion results and let us know if you want any extra features or find any bugs. Our libraries that we use to convert OST to PST contain a lot of fine-tuning options. Here are the main steps to take: Download the CoolUtils OST to PST Converter on this site; Launch the setup file to install the utility on your computer; Open the converter to transfer the files; After installing the program, launch …Mar 21, 2024 · Converting OST files to PST using the Outlook Import/Export feature is a straightforward process that allows you to export OST to PST without the need for third-party software. This method is particularly useful for users who have access to the original Microsoft Exchange account associated with their OST file. Convert PST files to OST format online. Our PST convertor allows you to convert several PST files to OST format online for free. Convert PST or any other supported file formats. No third-party software installation is required. Web-based application is fast, robust, easy-to-use and absolutely free.若要手动将 OST 文件转换为 PST 文件，请执行以下步骤: 导航到 File Outlook 中的菜单。. 选择 Import/Export 从下拉菜单中。. 选择 Export to a file 从下拉菜单中。. 选择 Outlook Data File 选项 (. pst) 选择是要导出单个文件夹还是整个帐户。. Include subfolders 选项应该被选中 ...OST to PST Converter offers command line options for converting items from .ost to .pst files. To start the conversion, use the convert pst command followed by various options.. One of the key features is the ability to apply a search query to filter messages based on specific criteria, utilizing search keywords and boolean search operators.This allows …Jan 19, 2024 · Convertendo OST para PST usando a opção Outlook Export. Há como converter OST para formato PST manualmente: Execute o Microsoft Outlook e abra o arquivo OST associado à sua conta. Clique no menu ‘Arquivo’ > 'Abrir & Exportação’ > 'Importar & Exportar'. Selecione ‘Exportar para um arquivo’ opção e clique em ‘Avançar’ botão. Feb 10, 2023 · Yes, there are free tools that you can use to convert OST to PST files. Here are a few options: Microsoft’s Export Tool: Microsoft provides a free tool called “Scanpst.exe” that can be used to convert OST to PST. This tool is included in all versions of Microsoft Outlook and can be used to repair and convert OST files to PST. Stellar Converter for OST is designed to convert inaccessible or orphaned OST files. With this tool, you can convert OST files into PST and other file formats, like MSG, EML, RTF, PDF, and HTML. It preserves the original hierarchy of mailbox data after conversion. The high accuracy rate of this tool makes it a popular choice among administrators.Jun 4, 2021 · From the list of options that appear, select Open & Export and then Import/Export. 2. The Import/Export Wizard will open in a new dialog box. From the list of actions to perform, select Export to a File and click the Next button. 3. Select Outlook Data File (.pst) from the options on the next page of the Wizard, and then click Next. MS Outlook에서 OST를 PST 파일로 변환하는 쉬운 단계. 단계 1. 컴퓨터에서 Remo OST-PST 변환기 도구를 다운로드, 설치 및 실행합니다. 단계 2. 다음 중 하나를 선택하세요 Open OST File (OST 파일을 수동으로 찾으려는 경우) 또는 Find OST File (소프트웨어가 자동으로 OST 파일을 ...MS Outlook에서 OST를 PST 파일로 변환하는 쉬운 단계. 단계 1. 컴퓨터에서 Remo OST-PST 변환기 도구를 다운로드, 설치 및 실행합니다. 단계 2. 다음 중 하나를 선택하세요 Open OST File (OST 파일을 수동으로 찾으려는 경우) 또는 Find OST File (소프트웨어가 자동으로 OST 파일을 ...Microsoft AppsFeb 16, 2024 · 1. Use the Remo OST to PST Converter. Download the application from the official website, and install it on your PC. Open the app and click Browse or Open OST File to select the OST file you want to convert. Select the files or folders you want to convert to PST by looking through the mailbox folders. Jan 18, 2021 · Para convertir un archivo OST a PST mediante el Asistente de importación / exportación de Outlook, siga los pasos indicados: Paso 1: Abra su aplicación de Outlook y haga clic en Archivo. Paso 2: En la ventana que aparece, seleccione Abrir y exportar y luego haga clic en Importación y exportación. Paso 3: Desde el Asistente de importación ... Xst Reader is an open source viewer for Microsoft Outlook’s .ost and .pst files, written entirely in C#, requiring only .Net Framework 4, and with no dependency on any Microsoft Office components. It presents as a simple, classic, three pane mail viewer: It allows viewing of emails in plain text, HTML, and RTF formats.Step 2: Select the File. Once the tool is installed, open the tool. The home page will prompt you to select the OST file. It will list all the Outlook profiles, so you can easily select the associated OST file. If you can’t find the OST tool, you can even Choose Mailbox Manually browse and select it.Step 1: Open Aid4Mail’s settings. In Aid4Mail, select the Settings tab. Update the Session name so it describes the task at hand. In this example, we will be converting John Doe’s OST file to a PST file so we’ve entered John Doe OST to PST as the session name. Below the session name there are three sections: Source, Target and Filter.Free DownloadOST PST Converter Tool. OST PST Converter Tool. It allows Outlook user's to export emails from an off-line Exchange OST file to PST format. Scans corrupted OST file with dual scanning mode to preview mails with attachments. Recover emails including calendar, contacts, tasks, notes, journal, folder list etc., from unworkable .ost file.Select “Import/Export” from the options provided. Choose “Export to a file” and click “Next.”. Select “Outlook Data File (.pst)” as the file type and click “Next.”. Choose the OST file you want to convert and select the desired options. Specify the location where you want to save the converted PST file. Click “Finish” to ...Step 1: Open Outlook. Sign in if you haven’t already. Click on “File” at the top left of the ribbon. Open Outlook and go to the “File” tab. Steps 2 and 3: In the blue menu bar on the left, click on “Open & Export”, then click on the “Import/Export” button. A pop-up window will appear.Open your data from Exchange (.OST file) in Microsoft Outlook. If you are looking for a freeware that will convert Outlook OST file to PST format quickly and easily, OST2 is …MS Outlook에서 OST를 PST 파일로 변환하는 쉬운 단계. 단계 1. 컴퓨터에서 Remo OST-PST 변환기 도구를 다운로드, 설치 및 실행합니다. 단계 2. 다음 중 하나를 선택하세요 Open OST File (OST 파일을 수동으로 찾으려는 경우) 또는 Find OST File (소프트웨어가 자동으로 OST 파일을 ...A TrustVare OST to PST Converter is a software application that can convert an offline Outlook data file (OST) to a personal storage table (PST) file. PST files are a standard format for storing Outlook data and can be opened and used with any version of Outlook. OST files, on the other hand, are only accessible with Outlook when …Create a new PST file. Go to the OST file, select and copy all the contents to be converted with your mouse. Go back to the new PST file, then paste all the contents into the PST file. That will do the conversion. Second, if you can access the Exchange server containing the account data for the OST file, then you can use Export-Mailbox command ...Install Offline OST to PST Converter in Windows. Start Offline OST to PST Converter. Select an OST file on the first page of the program. Click Next. Select the Converter mode mode. Click Next. View the content of the OST file. Click Next. Select a folder for saving converted data.Steps for obtaining a PST file from an OST file: Uploading your OST file to the server. You can upload the OST file to the server on the service's home page. To upload a file: Select the file on disk. Enter your e-mail (so that you can receive notifications when the conversion is complete or if the conversion session is terminated for some ... Follow these steps to convert an OST file into PST file by using the software: Run Stellar Converter for OST. Browse and select the Offline Outlook Data File (.ost) Click 'Convert' button to start the conversion process. Click 'Save Converted File' button to save the mailbox data. Kernel for OST to PST Converter is an email migration tool designed to convert OST files and mailboxes into PST format. The software is capable of retrieving user mailboxes from OST files that are orphaned as well as damaged OST files and convert them to PST format (on any Outlook edition). With Kernel for OST to PST Converter, … We would like to show you a description here but the site won’t allow us. MS Outlook에서 OST를 PST 파일로 변환하는 쉬운 단계. 단계 1. 컴퓨터에서 Remo OST-PST 변환기 도구를 다운로드, 설치 및 실행합니다. 단계 2. 다음 중 하나를 선택하세요 Open OST File (OST 파일을 수동으로 찾으려는 경우) 또는 Find OST File (소프트웨어가 자동으로 OST 파일을 ...We would like to show you a description here but the site won’t allow us.
Learn how to work with offline Outlook Data Files (.ost) that are used for Exchange accounts or Outlook.com. Find out how to re-create, open, or import .ost files in Outlook for Microsoft 365, Outlook 2021, Outlook 2019, or Outlook 2016. . Bathandbody com
But, you can preview all mailbox items in OST file for free after conversion. 2. Advik OST to PST Converter. Advik OST to PST Converter is an advanced software that quickly converts OST file to PST format. Besides PST, it also saves the OST file to MSG, MBOX, PDF, EML, TGZ, DOC, and several other file formats.Here are the main steps to take: Download the CoolUtils OST to PST Converter on this site; Launch the setup file to install the utility on your computer; Open the converter to transfer the files; After installing the program, launch …OST to PST Converter offers command line options for converting items from .ost to .pst files. To start the conversion, use the convert pst command followed by various options.. One of the key features is the ability to apply a search query to filter messages based on specific criteria, utilizing search keywords and boolean search operators.This allows …Free DownloadOST PST Converter Tool. OST PST Converter Tool. It allows Outlook user's to export emails from an off-line Exchange OST file to PST format. Scans corrupted OST file with dual scanning mode to preview mails with attachments. Recover emails including calendar, contacts, tasks, notes, journal, folder list etc., from unworkable .ost file.Learn how to work with offline Outlook Data Files (.ost) that are used for Exchange accounts or Outlook.com. Find out how to re-create, open, or import .ost files in Outlook for …You can begin by opening the OST Exporter PST Tool and selecting “Add File.”. Choose the output format – Outlook PST file from – Menu – Saving Option after adding OST file. To save the produced file, navigate to the desired location on your computer. Export is the action of removing something from the system.Learn how to convert OST files to PST for free using Outlook or two of the best OST to PST converter tools: Stellar Converter for OST and SysTools OST Converter. Find out the pros and cons of each …Rename the file back when Outlook is closed and then open Outlook again. Export your Tasks to a pst-file, close Outlook and rename the ost-file to .old again. Also see: Don’t risk losing your Contacts and Calendar when using IMAP in Outlook 2013. Robert Sparnaaij [MVP-Outlook] https://www.howto-outlook.com. https://www.msoutlook.info.Offline OST to PST Converter kann E-Mails, Kontakte, Termine und andere Daten aus *.OST-Dateien als MSG-Dateien speichern. Die Software hilft, alle Daten aus OST-Dateien in MSG-Dateien zu konvertieren und als MSG zu speichern. Der Kunde kann die *.msg-Dateien später mit Drag and drop in die meisten E-Mail-Client-Programme importieren: …Convertir OST en PST. Temps nécessaire : 5 minutes. Pour convertir manuellement un fichier OST à PST, nous aurons besoin d’utiliser Outlook soi. Assurez-vous d’avoir accès au profil Outlook d’origine. Ouvrez Outlook et cliquez sur Fichier. Ouvrir et exporter et choisissez Importer/Exporter. Exporter vers un fichier.But if you convert OST files regularly or if their size exceeds 4GB, it is better to install Offline OST to PST file converter. Service and software support the OST to PST conversion into latest version of Outlook for Microsoft 365. Please, disable AdBlock and reload the page to …I have an old PST file with old emails etc that I want to merge into my live OST file but can't see how to do this. Drag and drop doesn't work saying "Exchange ActiveSync doesn't support what you are trying to do". Thanks for reading. Answer. Roady [MVP]The best OST to PST converter software is SysTools, an all-in-one utility for Windows systems that ensures full data conversion from OST files such as emails, calendars, contacts, notes, and tasks into PST format. It allows for batch conversion, file migration along with attachments, selective email export, file scanning and previewing, …But if you convert OST files regularly or if their size exceeds 4GB, it is better to install Offline OST to PST file converter. Service and software support the OST to PST conversion into latest version of Outlook for Microsoft 365. Please, disable AdBlock and reload the page to …Outlook Data Files (.ost) are always copies of items that are saved on a mail server and don’t need to be backed up like Outlook Data Files (.pst). Re-create an offline Outlook Data File (.ost) Offline Outlook Data Files (.ost) are copies of your Exchange information. It is not necessary to back up this file. You can create a new copy at any ....