Give the right information about OST and PST file. Benefit, differences and other aspects of Outlook OST and PST file.

Restoring Outlook Emails from an OST after Deleting the Mailbox

OST to PST Conversion process easily get emails after deleting the mailbox

How to get Outlook emails from OST file?

By use of third party email recovery solution or manually method Outlook client can easily restore Outlook emails from damage or unreadable OST file.

OST to PST Conversion Process

It is a modern technique which can easily repair orphan OST file as well as convert an offline OST file into PST file.

Outlook Oversized OST File Problem

I would like to suggest useful tool to easily split oversized OST file.

Friday, 13 May 2016

Why We Need To Convert OST Files To Outlook PST?

Most of the users of MS Outlook are quite aware of two types of file formats i.e. OST and PST files. PST files (Personal Storage Table) are the main storehouse of all the data stored in Outlook whereas OST files (Offline Storage Table) contains the replica of data stored in Exchange server. OST comes into existence when the cached mode is enabled from Outlook allowing user to work offline without Mail server. Any changes made will get itself synchronized when connected with the Exchange Server. The blog will be discussing the reasons why we need to convert OST files to Outlook PST file.

Need of Conversion from OST File to PST

The main reason why users prefer to convert their Exchange OST mailbox to PST file is the several issues of OST file that makes the OST file inaccessible or corrupted. Some of the causes that lead to the conversion of OST to PST file are as follows:
  • Issue of Exceeding OST Size Limit
    Size limit of OST file varies with different Outlook versions. In Outlook 2007, size limit supported was 20 GB, which was increased to 50 GB in 2010/2013 versions. Usually, the maximum default size limit is set to 20 GB, which is why performance of Outlook slows down when it reaches or exceeds this size limit.
  • Orphaned State of OST file
    Each OST file is bound to particular Exchange Mailbox and any modification made is continuously synchronized to Exchange Server. When the Exchange Mailbox is dismounted/deleted from the server, the OST file will become inaccessible leading to orphaned state.
  • Synchronization Problems
    It arises if there is any interruption while the OST file is being synchronized with the Exchange Server. Since the OST file is encrypted, decryption key of the Outlook profile needs to be matched with the one in Exchange Server. If it does not, OST file will face synchronization problem making file inaccessible.
  • OST Bound to MAPI Profile
    Since OST file is bound to a particular MAPI profile, its access can be only done when the user log in and authenticate using the profile that was originally used to create an OST file. In case of authentication failure, client will restrict user to open Exchange OST file and its contents.
  • Corrupted OST File
    OST file may be corrupted due to power failure during synchronization, virus attack, improper handling of OST file, damaged hard drive/local storage where the OST file was stored, etc. The OST file in corrupted state may lead to inaccessibility and loss of contents in it.

How to Convert OST to PST

As discussed above, the issues in OST file makes the conversion of OST to PST file necessary. However, Outlook does not support direct conversion of OST to PST file. To repair the damaged OST, an inbuilt utility scanost.exe can be used, which is now replaced by scanpst.exe for repair of both OST and PST files. This method is used only to repair slightly damaged OST file and does not convert OST to PST. Therefore, a reliable way for easy conversion of OST to PST file is possible with the help of a third party tool, OST to PST Converter. It has the ability to convert all the data items like emails, contacts, calendars, etc. in Offline OST file to Outlook PST file, keeping the original formatting intact after conversion. The tool also supports recovery of data from corrupted OST file.


The blog has been aimed to focus on various issues associated with Exchange Offline OST file and the need for conversion of OST files to Outlook PST files. It further defines a solution through which user can effortlessly convert OST files irrespective of their states to healthy PST file using OST to PST Converter software.

Monday, 22 December 2014

Convenient Technical Execution to Convert Exchange OST Email to PST File

Queries like how to convert Exchange OST email to PST file are very common amongst users because OST files often came across with sync issues with Exchange server. According to definition of OST file, it is Offline storage table is replica of Exchange data on hard drive of computer. MS Outlook when works with conjunction with Exchange server permits users to work in offline mode when connection with Exchange Server is not possible. As soon as internet connectivity is retrieved, OST file gets automatically sync with Exchange data, when sometimes fails to sync it displays error messages. Sometimes it becomes corrupt due to several reasons like virus attacks, bad sectors, email headers and accidental shut down etc. To restore OST file data it is important to convert OST in PST that requires some preparations. In this above listed section we will make you familiar with some pre-requisites necessary before OST data recovery along with tool to execute OST to PST.

How To Know OST File Corruption?

OST file data my get corrupt it displays typical type of error message on screen of user, one common error message amongst them is “Cannot open your default email folders. The file xxx.ost is not an offline folder”. This error message truly indicates that either OST file is corrupt or connection between Exchange and Outlook is not made. The method to resolve this issue is either to check of secure internet connectivity or to use third party Outlook OST Mailbox Recovery utility. Few important things taken in consideration are

  • Always backup your OST file data so that when data loss situations occur, the data can be restored from it.
  • Make sure you have sufficient internet connectivity between Outlook and Exchange server before your OST starts synchronizing with Exchange mailbox.
  • Always properly exit Outlook, so that all running programs can be closed before closing that program in between running positions.
  • Make sure you never attach virus infected USB or hard drives to your computer so that saved data on hard drive will not get infected.

How to Migrate OST to PST?

To safeguard your OST file data, it is important to follow above listed factors properly. If you have corrupt OST file with you, make use of Scanost.exe to fix the issue. But utility will help to resolve only minimal corruption issues of OST file. This manual procedure will only verify items from Exchange mailbox and help to restore missing items. If there are severe corruption in OST files them one must rely on third party tools to fix the issue. OST Recovery tool is most reliable application in terms of OST data recovery that helps to resolve even severe corruption issues in Outlook. Integrated with advanced set of features, the tool has scanning modes that will help to extract each item from OST mailbox without facing any data loss or concerning issues.

Tuesday, 2 December 2014

Go with Quiet Freeware Technique to Fix and View Exchange OST File

Microsoft Exchange OST files being a sensitive files show synchronization errors that makes users unable to access mailbox data. So in these types of situations it becomes necessary for them to hire online freeware utilities to fix and view OST file data. In this guide we will make you familiar with freeware online solution named as OST Viewer tool that are professionally equipped to solve OST file corruption.

Introduction to OST Files

OST file are is Offline file in MS Outlook allowing users to work in offline mode when internet connectivity with Exchange server is not possible. It is cache of data which is stored on Exchange Server’s. The benefits of creating this cache copy are to reduce the network traffic, provision to work in offline mode and reduce the burden on the Exchange server accounts.

OST File Comprises of Following Items:

  • Mailbox data i.e. Emails, Calendars, Contacts, Tasks, Notes and Journals
  • Hidden items and other overhead
  • Public folders
  • Shared folders

Causes of OST File Corruption

 OST files are very sensitive in nature and are being prone to corruption due to certain unforeseen reasons. These includes data storage device failures, power failures, networking issues, Virus or malware attacks, improper shut down of Outlook and other software issues. OST files when experience any of the issues they starts behaving abnormally. But the most common issues reported in OST files are synchronization issues. Users experience some issues and errors in OST file mostly when they synchronized OST files with Exchange Server. One common error message they receive is “Cannot open your default email folders. The file xxx.ost is not an offline folder file”.

The above discussed error appears in two situations;
  1. The OST file is damaged or corrupted and is in unrecognizable mode by MS Outlook. In such case when OST file is not recognized by Outlook it will report this error to users.
  2. OST file sometimes fails to synch with associated mailbox so in such cases also it will display this type of error messages.

How to Fix and View OST File Data?

Some users try to fix OST file issues using scanost.exe in built repair tool, but in some contexts it fails to repair OST file data. In such cases users feel secure in adopting freeware online solutions like OST Viewer because these tools has strong mechanisms to view complete OST file data to users after scanning all items. The tool to fix and view OST file is available free of cost to users so stop wasting time in thinking about worth of tool. Just download it and have desirable results without investing single penny.

In some cases users only have necessity of viewing an OST file items, in such cases we recommend you to use OST Viewer tool as tool will help to deeply scan and extract data even from corrupt OST file. The tool does not require MS Outlook and Exchange server to view OST file data which is most unique feature of tool. http://www.free.ostfile.co.uk/viewer/

OST Viewer Pro Version for Hidden Benefits

Upgrade to OST Viewer pro version that provides provision of exporting OST file data into Adobe PDF file format.  Using this OST Viewer pro tool user can view OST file in multiple views like HTML view, Email Header view, Hex view, Property view, MIME, Attachments and RTF view which is most helpful in digital investigation of OST files. Pro version of OST Viewer tool also provides advance search option for inspecting special emails from bulk OST files data.

Saturday, 15 November 2014

Techniques to Resolve Exchange Error 0x8004010f and Recover PST from OST File

Error 0x8004010f code is one of the most commonly faced errors when Outlook is used in conjunction with MS Exchange server environment. It is a MAPI error and occurs in several situations such as while downloading the Offline Address Book (OAB) files, while synchronizing OAB, while send/receive execution, corruption in OST file, etc. It is also a commonly encountered error when a new account is created on Exchange server. It has been found that if an organization running Exchange owns an offline list of address generator server, the particular error is usually received. This restricts any further synchronization, send/receive operation and it may also result in inaccessibility of OST file. In such situations, it gets necessary to develop any technique to resolve Exchange error 0x8004010f and recover PST emails from OST file.


  • When it is tried to synchronize the offline address list or OST file in Outlook with cache mode in enable state in Exchange, the below mentioned error message occurs in the folder or directory of Sync Issues. The lines of the error are as displayed below:
  • When it is endeavored to synchronize the .ost file or offline address book in Outlook with cache mode in disabled state in Exchange, the error message mentioned below is a common one.
Further, even after receiving error 0x8004010f if it is tried to transmit mails, the error: “Task ‘Microsoft Exchange Server’ reported error (0x8004010F): ‘The operation failed. An object could not be found’” occurs. With this, the synchronization between OST and Exchange server stops, restricting connection to Exchange mailbox and further conversion of OST file into PST format on the local/ client machine.


It generally takes about 24 - 48 hours for Exchange to generate the OAB for newly formed accounts. In the mean time, if any Outlook client tries to download the OAB then the error 0x8004010F pops up which indicates the failure of the download process. Therefore, new users should not attempt to download the Offline Address Book manually in Outlook. However, if the problem exists even after 48 hours manual download should be performed.


1. To fix the error users can view the Properties in Address list, check the settings of the Exchange server System Manager and verify the validity of address book. If the list is not valid then a new list should be added. The other way is to view Properties in Offline Address Book list and check the settings of Exchange System Manager. Thereafter, the validity of OAB in the Offline address list can be confirmed.
2. The error 0x8004010f can also occur while offline address list synchronization, if the client PC with Outlook has proxy settings and Internet Explorer browser is utilized. To eradicate the issue, Internet Protocol (IP) address of Exchange server 2007 Client Access Server should be listed in the exclusion list by utilizing the steps given below.
  • Open Internet Explorer (IE) web browser
  • Click the tab Tools, then click button ‘Internet Options’
  • In Internet Options window click Connections tab
  • In the LAN settings section, click LAN settings button
  • In Proxy Server section of LAN settings window, check ‘Bypass proxy server for local addresses’ box and then click Advanced
  • Then enter FQDN of Exchange 2007 CAS server and click OK
  • Thereafter restart Outlook program
Some more steps should be executed and are mentioned below:
  • On Exchange server, ensure if the offline address list generator server is running or not.
  • On the local PC, configure one proxy for and uncheck the box ‘Bypass proxy server for local addresses’.
  • Try to download OAB manually because the error occurs while downloading the OAB file also. Then check if the error has been fixed or not.
Most probably, the above mentioned techniques to resolve Exchange error 0x8004010f and recover PST emails from OST file are pertinent enough. But it may not be so and in that case an external recovery tool comes as a solution to the problem.

3. If none of the above recommended methods work out, then the cause of the error points to corruption in OST file. In such situations any professional application should be used to recover data items such as emails, calendars, contacts and others from the damaged and inaccessible .ost file. This is because the built-in OST Integration check tool (scanost.exe) that are present in other releases of Exchange has been removed in 2010 edition of Exchange server. Moreover, if executed in other releases it causes data loss. As a suitable alternative, a third party tool called Exchange OST to PST Recovery solution can be adopted without fear. This is because it recovers data corrupted .ost file and exports them in Outlook PST as well as other formats like EML and MSG. It proves as one of the most appropriate techniques to resolve Exchange error 0x8004010f and recover PST emails from OST file type.

Wednesday, 5 November 2014

How Can I Dissolve Synchronization Error Between OST File and Exchange Server Mailbox?

The main error that comes up while working with Outlook profile configured with Exchange Server mailbox is the synchronization error. This error takes place when the OST file (offline file) does not get synchronized with Exchange account when the connection is retrieved.
The inappropriate synchronization might occur due to availability of unreliable internet connectivity between the client and the server machines. To dissolve synchronization error between OST file and Exchange Server mailbox, it is required to perform several operations.

Methods to Dissolve Synchronization Error

Resolution #1: Re-Synchronizing Folders:
Once failed, synchronization can be maintained again between Outlook and Exchange account via two methods:
  • Manual Synchronization; and
  • Automatic Synchronization.
Let’s discuss both the techniques in details to get better understanding about them:
Manual Synchronization:
For synching the folders manually, the below mentioned procedure can be implemented:
  1. Click on the folder that needs to be synchronized from the ‘Folder List’ pane.
  2. For this, click on ‘Folder List’ available in the ‘Go’ menu (if the option is not available or accessible).
  3. On ‘Tools’ menu; click on the ‘Send/Receive’ button and then click on the folder (Microsoft Exchange Server) to start synchronization among incorporated offline folders.
  4. Alternatively, click on ‘Send/Receive All’ to synchronize entire offline folders.
Automatic Synchronization:
To enable automatic synchronization each time the connection is retrieved between Outlook and Exchange Server; following stated steps can be executed:
  1. Go to the ‘Tools’ menu and click on ‘Options’.
  2. Select the ‘Mail Setup’ tab.
  3. In ‘Send/Receive’ segment, click on the checkbox associated to ‘Send immediately when connected’.
  4. Click on ‘Send/Receive’.
  5. In the then appeared ‘Send/Receive’ Groups dialog box, ensure that the option ‘Perform an automatic send/receive when exiting’ is been selected.
  6. Next, click on ‘Close’ and click on ‘OK’.
Resolution #2: Create New OST File & Initiate Sync Operation:
This can be done by renaming the existing OST file and then synching both accounts. Following procedure can be implemented for renaming the existing OST.
  • Exit all running programs.
  • Click on ‘Start’ menu and then click on ‘Search’; further select ‘For Files or Folders’.
  • Click on ‘All files and folders’ in the ‘Search’ dialog box,
  • Type ‘*.ost’ in the ‘All or part of the file name’ tab.
  • Leave the file box corresponding to ‘A word or phrase’ as default.
  • Click on the hard disk option in the ‘Look’ section.
  • Then, under ‘More advanced options’, enable the check box associated with ‘Include subfolders’ and further click on ‘Search’.
  • In the existing ‘Name’ column, you can see the OST file.
The default location for the OST file storage is as follows.
“C:\Documents and Settings\user name\Local Settings\Application Data\Microsoft\Outlook”
Note: This applies to MS Windows 2000, MS Windows NT, MS Windows XP and MS Windows Server 2003.
  • Right-click on the appropriate OST file and further select ‘Rename’ option.
Note: Rename the file with different file extension, for e.g., (.pre) file extension instead of (.ost) file format.
  • In the ‘File’ menu, click on ‘Close’.
  • Start MS Outlook, click on ‘Send/receive’ on the ‘Tools’ menu, and then click on ‘Send/Receive All’.
Note: The above said workaround methods requires technical expertise; as it involves the possibilities of file corruption and data loss.

Alternate Solution to Dissolve OST Synchronization Issue

If the error message corresponding to OST Synchronization takes place, the major risk that may rises as an aftermath is data loss due to OST corruption. The above mentioned procedures are lengthier and complex as well. Therefore, to recover data from the corrupted OST file; Exchange OST to PST Recovery software can be used. It can dissolve synchronization error between OST file and Exchange Server mailbox.
The tool can extract data from mail, contacts, tasks, journals, calendars and other mailbox folders and restores them back in the form of PST files. It is supported over MS Outlook 2013, 2010, 2007 and 2003 versions.

Wednesday, 29 October 2014

OST File is not Accessible in MS Outlook – Find the Solution Here!

Tech experts certified by Microsoft Outlook, is delivering technical solutions based on customer needs. Among all such solutions, OST to PST Converter tool is a notable tool to recover OST files which are not accessible in Microsoft Outlook and convert it into PST\EML\MSG file formats. 

Microsoft Outlook supports all the features of Microsoft Exchange Server. When a user adds an account of Exchange Server to be configured with its Outlook profile, then all the data from the mailbox are in sync with the Outlook profile. This is known as synchronization of OST files with the Microsoft Exchange Server.
One of the benefits of this feature is that it allows the user to access OST files in offline conditions, even when the Outlook profile is not connected to Exchange server. But sometimes the synchronization feature of Outlook fails and OST files can’t accessible in MS Outlook. This breakage in connection between the client and Server leaves the OST file in an inaccessible state.

Occurrence of Orphaned OST Files
Orphaned OST file is a state where the Microsoft Exchange Server fails to recognize or associate the OST file. This may be due to number of reasons which are as follows:
  • The synchronization process takes place with the help of an encryption key. If this encryption key is misplaced or lost either from Mailbox or MAPI, then the synchronization fails and the OST files become orphaned.
  • Whenever there is a situation like a new Outlook profile is created or the current Outlook profile is edited then chances are there that the OST files might get orphaned
  • Hard –drive failures or sudden shut down of the Exchange server may lead to corruption of database and this will affect the corresponding OST files (they will get orphaned).
  • Break down of Outlook or any kind of interruption in the process of synchronization may lead to orphaned state of OST files.
Methods to Recover Orphaned OST files
Rebuilt OST files: Delete the local OST file and rebuild the OST files with Outlook from scratch when the connection between the Microsoft Exchange Server and the Outlook user’s profile is recreated .You can also rename the old OST file and then synchronize the renamed OST file with the Microsoft Exchange Server.

If there are no data in the Mailbox of the Exchange server or data is deleted from the Mailbox then recovery of OST files can be done with the help of third party solutions.

A Flexible Solution to Address the Requirements Of User
OST Recovery software is a professional tool to recover the orphaned state OST files and convert them into any of the file formats: EML/PST/MSG. The software provides a unique way to recover OST to PST files that can’t be accessible in MS-Outlook.

Wednesday, 17 September 2014

How to Resolve Problem and Error in MS Exchange OST Files

When MS Outlook and Microsoft Exchange Server works integrated and due to any reason connectivity with Exchange gets lost, in such case OST files are created in MS Outlook. These OST files permits users to work on Outlook when internet connection is lost or in slow mode. As soon as connection with Exchange server is gained, OST files gets automatically updated in Exchange account of user.

Sometimes queries like ‘how to resolve problem and error in MS Exchange OST files’ are seen amongst users when OST files gets corrupt or displays error message. Read this underlying section to check solution for same query and make OST files data accessible in MS Outlook. 

Have you ever encountered error like ‘Cannot open your default email folders, The OST file is not an offline file’ while opening Outlook? If yes then, don’t worry you will not lose you data. This error message might appear in following two circumstances:

  • Either OST file is gets damaged and is not recognized by MS Outlook.
  • Or if Microsoft Outlook fails to synchronized with Exchange mailbox offline folder.
This segment is all about resolving user queries like how to resolve problem and error in MS Exchange OST files with manual as well as commercial solutions like OST Converter tool.

Users should have an idea about how OST file gets corrupt or inaccessible so that resolution for the same can be find out accordingly and fixed for unwanted data loss. Now let’s have look at the scenarios into which OST file can get corrupt. The first reason for OST file corruption can be oversizing, if OST file grows beyond its fixed size limit, then it goes in inaccessible mode. The second and most common reason for OST file corruption can be virus or bugs in OST files. These virus systems damage the whole integrity of OST files and make all of its contents unreadable.

Some users get exhausted and find themselves as warrior without any help. But we would like to tell you that don’t be panic, your OST file data can be recovered using professional tools. There are online numerous organization’s those are dealing with OST recovery solutions.

Those users are not interested in externals tools can take beneficial help from manual procedure provided by Microsoft itself. OST Integrity Check tool is free utility offered by Microsoft to repair OST file issues. But as limitation, it only performs basic level of scanning and only helps to restore OST file structure. If there are severe issues with OST files, then it is recommended to use third party solutions like OST recovery tool so that complete data can be recovered from corrupt or damaged OST file.          

OST Recovery tool is most trusted tool amongst users that help to extract complete mailbox data from inaccessible, corrupt or damaged OST files. The self-instructed steps of tool are easily operable even by non-technical users which are an attractive part of this tool. Demo version is provided to check the performance of tool before investing in full version of OST Recovery tool.