Yota Ost To Pst Converter?
Yota OST to PST Converter Tool
- Easily convert OST to PST file format in bulk
- Smart preview of OST files in many different modes
- Effortlessly convert Inaccessible or Orphaned OST file to PST
- Capable to Export OST to different Web Clients directly
- Auto-search feature to search the OST files automatically
- Migrate the mailbox content between the specific date range
- Compatible with Windows 11, 10, 8, 7, etc. (32 and 64-bit processor)
Contents
Can an OST file be imported into Outlook?
As the official statement of Microsoft, ‘ you can’t move or import OST files directly into Outlook ‘, just like you import from PST; If you want to copy your offline email data into a new Outlook on another computer, you can either configure the Outlook and connect to the server to create a new OST or convert the OST
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Can Office 365 Open OST?
3. Import Converted OST Files into Office 365 – Next, you need to create user accounts on Office 365, assign licenses, create a CSV mapping file, upload it, assign an Import Export role, and then start the import job to import the converted OST files into Office 365 mailboxes.
It may take a few weeks to a month or more to upload and import all mailboxes. Besides, Microsoft 365 also limits you from importing PST files larger than 20 GB or mail items larger than 35 MB by default. You can use an OST to PST converter tool, such as Stellar Converter for OST Technician to import OST files directly into Office 365 mailboxes.
This helps you to export all your offline Outlook data (.ost) files to Office 365 with the original folder structure and hierarchy without any limitations. You can import as large as 50 GB (or larger) OST files into Microsoft 365 in a few clicks, thus saving time and effort.
- Install and open the software.
- From the main interface of the software, click Choose Manually and then click Browse to select the OST file. You can also select inaccessible or orphaned OST files that belong to deleted or disabled mailbox profile.
- Click Convert to initiate the conversion process.
- The software will list all mail items from the OST. Preview them and validate the data.
Note: This option also helps you to select the desired items if you do not want to import the entire data of the OST file.
- From the main menu, click the Save Converted File option.
- The Save As dialog box lists multiple saving options.
- Select Export to Microsoft 365 and click the Next button.
Enter the Office 365 or Microsoft 365 credentials and click OK,
This will export the OST file to Office 365 mailbox directly.
Why convert OST to PST?
Why You Need to Convert Outlook OST to PST MS-Outlook caters to a wide range of messaging needs of a business organization and is widely used in offices for internal and external communication. Most of the users have an MS-Exchange Server account which works in synchronization with an offline storage table file (.OST).
- The OST file contains all your mail items in an offline mode on your hard drive.
- Every time you log in to your account, all the mail items are synchronized and downloaded into this.
- These OST files work in synchronization with the MS Outlook PST file.
- It helps in keeping the mailbox up-to-date with new mails, meeting request, delivery reports etc.
However, there are situations when such mail items become inaccessible. In such a situation, you need to convert mails in the OST file into a different Outlook compatible file format like PST. 
Some of the reasons, when it becomes necessary to import ost into pst, are mentioned below.1. MS-Exchange server can unexpectedly crash due to power failure, malicious software, virus attacks, or any other reason. A severe crash could land you nowhere as you might not be able to connect to the MS Exchange Server.
- Such situations are very challenging and difficult to handle as in most of such cases they result in repeated display of various error messages.2.
- In the case of Exchange Server downtime or Exchange Server maintenance, you will not be able to access your mailbox.
- However, at times it becomes very necessary to have access to the mailbox items.
All the user mailboxes, which include different mail items, are stored in an OST file, which works with synchronization with MS Exchange Server. To access the mail items, you need to export ost to pst and import it to MS Outlook application.3. By converting Outlook format, the data can be recovered even after accidental deletion of user mailboxes on the Exchange server.4.
‘Your offline folder file could not be configured.\\ComputerName\FolderName\Outlook.ost.’ ‘The operation failed due to a registry or installation problem. Restart Outlook and try again. If the problem persists, please reinstall.’
Also, the following message might appear when you are working in a networked environment and the system having the OST file is not shared. “ComputerName is the computer name on which installation of Microsoft Outlook has been done and FolderName is the name of the folder that includes the offline file.” 6.
- Since OST files are the offline storage files, which let you send/receive and delete emails even when it is not connected to Exchange Server.
- Once connected, it gets synchronized with the Exchange Server.
- That means all the changes that have been made to the OST file while working offline will be reflected in the Exchange Server.
However, this OST file might get corrupt. This will lead to inaccessibility to user mail items. The OST file gets corrupt due to several reasons, as mentioned below.
Software related issues Unexpected hardware failures Abnormal termination Application shutdown Damage induced on the database Server breakdown Virus Attacks Trojans Infections Lack of Storage Space Accidental deletion of the user account
To overcome this situation, you need to, However, you may not get the best tool to repair a corrupt OST file; hence, the only best way is to convert a working outlook ost to pst. For this, you can use the backup copy of the OST file. The PST is a file format that can store all the mail items from the OST file and you can continue working.
- Such process might resolve the issue, but any manual conversion is never recommended; as they are always prone to errors and lacks a professional approach.
- The process requires a professional tool that can convert OST file into PST format.
- The best option here is to use a reliable and tested professional tool.
proves to be an ideal tool to extract PST from OST without any hassle. It uses a self-explanatory interface, which guides the user to easily convert all OST files to PST files. Once done the converted PST files can be imported back to the MS Exchange Server in a single step.
This helps in saving a lot of time and cost, which was involved in the rebuilding process. The tool supports all MS-Outlook versions released till date including the 32 and 64-bit versions. With this tool, you can retain the access to all mail items including messages, notes, attachments, contacts, calendar, journal, etc.
Also, the tool allows you to save the converted emails in various other message formats like EML, MSG, RTF, etc. Moreover, you can quickly preview the mail items before the conversion process. This helps in the selective conversion of various mail items like emails, notes, attachments, and contacts to PST.
Converts corrupt or inaccessible OST file to a usable PST Restores mail items like attachments, tasks, notes, journals, calendar, etc. Provides quick preview of mail items Supports selective conversion of mail items Provides advanced “Find” feature to search OST files Options to save mail messages in different formats including EML, MSG, PST, RTF, HTML, and PDF Provides a self-explanatory and interactive graphical user interface Widely compatible with MS Outlook 2019, 2016, 2013, 2010, 2007, 2003, 2002, and 2000
: Why You Need to Convert Outlook OST to PST
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How to convert OST file to PST online?
How do I change a OST file to a PST? Open online Aspose OST to PST converter. Upload your OST file and click the ‘CONVERT’ button. Download the converted PST file.
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How can I increase OST to 100gb?
This article applies only to Outlook for Windows. By default, starting from the Outlook 2010 version desktop application is able to open,pst files and create,ost which size is not more than 50 GB. If you try to open the,pst file which is more than 50 GB in size, you will receive the following error: In order to increase the maximum size of the,pst and,ost files that your Outlook can open or create you will need to add or modify the following registry entries:
- The MaxLargeFileSize registry entry (default value is 51,200 MB (50 GB))
- The WarnLargeFileSize registry entry (default value is 48,640 MB (47.5 GB))
The MaxLargeFileSize determines the absolute maximum size that both the,pst and the,ost files can grow to. After this maximum size is reached, Outlook does not permit the size of the file to grow beyond this size. The WarnLargeFileSize determines the maximum data that both the,pst and the,ost files can have.
- After this maximum data is reached, neither the,pst nor the,ost files are permitted to add any more data.
- However, the size of the physical file may still increase because of internal processes.
- Important: it is recommended that the values between the MaxLargeFileSize registry entry and the WarnLargeFileSize registry entry be at least 5 percent (%) so that internal processes are not hindered from continuing.
These settings apply to both,ost and,pst files. If you modify these registry values, this can affect,ost files that are used with Cached Exchange Mode, with AutoArchive, and with,pst. files. If Outlook is configured to download shared folders, the contents of shared folders are stored in the local Offline Outlook Data (.ost) file.
- Click Start, and then click Run, type Regedit, and then click OK.
- Navigate to HKEY_CURRENT_USER\Software\Microsoft\Office\x.0\Outlook\PST (x.0 corresponds to the Outlook version: 16.0 = Outlook 2016, 15.0 = Outlook 2013, 14.0 = Outlook 2010)
- Click PST, and then right-click MaxLargeFileSize in the right pane.
- Click Modify, select Decimal and then type the limit (102400 for 100 GB) in the Value data
- Click OK,
- Right-click WarnLargeFileSize, and repeat steps 4 through 5 (if you set the value for MaxLargeSize to 100GB then set WarnLargeFileSize to 97280 – 95 GB).
Note: you may have to create the registry values if they do not exist. If the registry values do not exist, follow these steps to create them:
- Click Start, click Run, type Regedit, and then click OK.
- Navigate to HKEY_CURRENT_USER\Software\Microsoft\Office\x.0\Outlook (x.0 corresponds to the Outlook version: 16.0 = Outlook 2016, 15.0 = Outlook 2013, 14.0 = Outlook 2010)
- Right-click Outlook, point to New, and then click Key,
- Type PST, and then press ENTER.
- Right-click PST, point to New and then click DWORD
- Type MaxLargeFileSize, and then press ENTER
- In the Edit DWORD Value window, choose Decimal and type the limit in the Value data box, and then click OK,
- Repeat steps 5 through 7 to create another DWORD WarnLargeFileSize, and then close the registry.
Value for registry entries should be set in either bytes or megabytes and you will need to calculate it first. You can use any online converter to calculate the value, for example this one – enter the gygabyte value, click Convert – the value you will need is the one in binary.
- Despite the fact that you will be able to open,pst files that are larger than 50GB after making specified registry changes, it can still significantly decrease the performance of your Outlook application.
- We don’t recommend increasing it to more than 100GB due to the nature of our shared environment.
In old Outlook data file types, the entries MaxFileSize and WarnFileSize were in use. Values under MaxFileSize and WarnFileSize have been used for the old-type ANSI format (an earlier Microsoft Outlook format) data files. T he ANSI values are set in byte increments.
Please note that since Outlook 2003 version the datafiles are in new UNICODE formats as ANSI format supports 2 GB data file maximum. The MaxFileSize registry entry (default value is 2,075,149,312 bytes (1.933 GB)) The WarnFileSize registry entry (default value is 1,950,368,768 bytes (1.816 GB)) If the old-type ANSI data file is in use please consider importing this,pst in the new profile.
The old type data file has “Outlook Data File (97-2002)” in the format of the file. If the value of the MaxFileSize registry entry ever exceeds the ANSI 2 gigabyte (GB) limit on either the,pst or the,ost files, the value will be ignored to limit the size to 2 GB to prevent corruption.
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What program opens OST files?
4. SysTools OST Viewer – SysTools OST Viewer is a free OST viewer tool that lets you read and open orphaned, inaccessible, or corrupt OST file without Outlook. The software provides a free preview of OST mailbox data, such as emails, attachments, contacts, notes, calendars, etc. 
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What is the difference between OST and PST files?
Part 3. The Differences Between Outlook PST And Outlook OST – The PST and OST Formats are both Outlook Data Formats. They are used for storing your Outlook items (messages, calendar events, contacts, among other things). Earlier versions of Outlook (Outlook 2002, and below) used an extended ASCII with a codepage for encoding both PST and OST data files.
This early format couldn’t exceed the max size of 2GB when storing files: an attempt to do so could corrupt the file and end up with an error message. However, from Outlook 2003, the storage format of both OST and PST data files became a Unicode variant. This made it possible to store files in sizes of up to 20GB! Well, that wasn’t the end of notable improvements: starting from Outlook 2010, files now exceed the 20GB limit.
OST and PST File Formats could now hold up to 50GB of data. See how to fix the ” cannot move the Outlook items ” error. This extraordinary feat (when comparing the size of older PST and OST files to newer ones) also brought to the table more recent problems with the OST and PST Formats.
PST files can be moved to the local computer while OST files are synchronized individually using a server. PST file supports uploads to other email services, but OST files cannot be moved to other services except it’s converted. PST files can be backed up and restored automatically, yet OST still requires synchronization with the server.
Advantages of OST Over PST
OST synchronizes automatically, while PST on the other hand, requires it to be downloaded locally. OST modifications automatically appear on the server. But PST files become a separate entity once it’s downloaded. Your emails/files can be used on other devices without the need to download them locally. However, PST is different as you’ll need to download both emails and files locally before you can access them on other devices.
How to convert OST file to PST online?
How do I change a OST file to a PST? Open online Aspose OST to PST converter. Upload your OST file and click the ‘CONVERT’ button. Download the converted PST file.
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Why convert OST to PST?
Why You Need to Convert Outlook OST to PST MS-Outlook caters to a wide range of messaging needs of a business organization and is widely used in offices for internal and external communication. Most of the users have an MS-Exchange Server account which works in synchronization with an offline storage table file (.OST).
- The OST file contains all your mail items in an offline mode on your hard drive.
- Every time you log in to your account, all the mail items are synchronized and downloaded into this.
- These OST files work in synchronization with the MS Outlook PST file.
- It helps in keeping the mailbox up-to-date with new mails, meeting request, delivery reports etc.
However, there are situations when such mail items become inaccessible. In such a situation, you need to convert mails in the OST file into a different Outlook compatible file format like PST. Some of the reasons, when it becomes necessary to import ost into pst, are mentioned below.1. MS-Exchange server can unexpectedly crash due to power failure, malicious software, virus attacks, or any other reason. A severe crash could land you nowhere as you might not be able to connect to the MS Exchange Server.
- Such situations are very challenging and difficult to handle as in most of such cases they result in repeated display of various error messages.2.
- In the case of Exchange Server downtime or Exchange Server maintenance, you will not be able to access your mailbox.
- However, at times it becomes very necessary to have access to the mailbox items.
All the user mailboxes, which include different mail items, are stored in an OST file, which works with synchronization with MS Exchange Server. To access the mail items, you need to export ost to pst and import it to MS Outlook application.3. By converting Outlook format, the data can be recovered even after accidental deletion of user mailboxes on the Exchange server.4.
‘Your offline folder file could not be configured.\\ComputerName\FolderName\Outlook.ost.’ ‘The operation failed due to a registry or installation problem. Restart Outlook and try again. If the problem persists, please reinstall.’
Also, the following message might appear when you are working in a networked environment and the system having the OST file is not shared. “ComputerName is the computer name on which installation of Microsoft Outlook has been done and FolderName is the name of the folder that includes the offline file.” 6.
- Since OST files are the offline storage files, which let you send/receive and delete emails even when it is not connected to Exchange Server.
- Once connected, it gets synchronized with the Exchange Server.
- That means all the changes that have been made to the OST file while working offline will be reflected in the Exchange Server.
However, this OST file might get corrupt. This will lead to inaccessibility to user mail items. The OST file gets corrupt due to several reasons, as mentioned below.
Software related issues Unexpected hardware failures Abnormal termination Application shutdown Damage induced on the database Server breakdown Virus Attacks Trojans Infections Lack of Storage Space Accidental deletion of the user account
To overcome this situation, you need to, However, you may not get the best tool to repair a corrupt OST file; hence, the only best way is to convert a working outlook ost to pst. For this, you can use the backup copy of the OST file. The PST is a file format that can store all the mail items from the OST file and you can continue working.
Such process might resolve the issue, but any manual conversion is never recommended; as they are always prone to errors and lacks a professional approach. The process requires a professional tool that can convert OST file into PST format. The best option here is to use a reliable and tested professional tool.
proves to be an ideal tool to extract PST from OST without any hassle. It uses a self-explanatory interface, which guides the user to easily convert all OST files to PST files. Once done the converted PST files can be imported back to the MS Exchange Server in a single step.
This helps in saving a lot of time and cost, which was involved in the rebuilding process. The tool supports all MS-Outlook versions released till date including the 32 and 64-bit versions. With this tool, you can retain the access to all mail items including messages, notes, attachments, contacts, calendar, journal, etc.
Also, the tool allows you to save the converted emails in various other message formats like EML, MSG, RTF, etc. Moreover, you can quickly preview the mail items before the conversion process. This helps in the selective conversion of various mail items like emails, notes, attachments, and contacts to PST.
Converts corrupt or inaccessible OST file to a usable PST Restores mail items like attachments, tasks, notes, journals, calendar, etc. Provides quick preview of mail items Supports selective conversion of mail items Provides advanced “Find” feature to search OST files Options to save mail messages in different formats including EML, MSG, PST, RTF, HTML, and PDF Provides a self-explanatory and interactive graphical user interface Widely compatible with MS Outlook 2019, 2016, 2013, 2010, 2007, 2003, 2002, and 2000
: Why You Need to Convert Outlook OST to PST
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