Stellar Logo
  • For Individuals
    Back to main menu

    For Individual

    • Windows Data Recovery

      Recovers lost or deleted Office documents, emails, presentations & multimedia files.

      • Free
      • Standard
      • Professional
      • Premium
    • Mac Data Recovery

      Recovers deleted files, photos, videos etc. on Mac.

      • Free
      • Standard
      • Professional
      • Premium
    • Photo Recovery

      Recover photos, videos, & audio files from all cameras and storage on Windows or Mac.

      • Standard
      • Professional
      • Premium
    • iPhone Data Recovery

      Recover deleted photos, videos, contacts, messages etc. directly from iPhone & iPad.

      • Recover
      • Erase
      • Toolkit
    • Video Repair

      Repair multiple corrupt videos in one go. Supports MP4, MOV & other formats.

      • Standard
      • Premium
    • Photo Repair

      Repair multiple corrupt photos in one go. Supports JPEG & other formats.

      • Standard
      • Professional
      • Premium
  • For Business
    Back to main menu

    For Business

    • Email Repair
      • Exchange Repair Repair corrupt EDB file & export mailboxes to Live Exchange or Office 365
      • Outlook PST Repair Repair corrupt PST & recover all mailbox items including deleted emails & contacts
      • OLM Repair Repair Outlook for Mac (OLM) 2011 & 2016 backup files & recover all mailbox items
      • Exchange Toolkit Repair EDB & Exchange backup file to restore mailboxes, convert OST to PST, & convert EDB to PST
      • Active Directory Repair Repair corrupt Active Directory database (Ntds.dit file) & extract all objects in original form
    • Email Converter
      • EDB to PST Convert online & offline EDB file & extract all mailbox items including Public Folders in PST
      • OST to PST Convert inaccessible OST file & extract all mailbox items including deleted emails in PST
      • NSF to PSTConvert IBM Notes NSF file & export all mailbox items including emails & attachments to PST
      • MBOX to PSTConvert MBOX file of Thunderbird, Entourage & other clients, & export mailbox data to PST
      • OLM to PST Convert Outlook for Mac Data File (OLM) & export all mailbox data to PST in original form
      • GroupWise to PST Convert GroupWise mail & export all mailbox items - emails, attachments, etc. - to PST
      • EML to PSTConvert Windows Live Mail (EML) file & export mailbox data - emails, attachments, etc. - to PST
      • Office 365 to PSTConnect to Office 365 account & export mailbox data to PST and various other formats
      • Migrator for Office 365Quickly migrate Outlook data files(OST/PST) directly to Office 365 or Live Exchange
    • File Repair
      • SQL Repair Repair corrupt .mdf & .ndf files and recover all database components in original form
      • Access RepairRepair corrupt .ACCDB and .MDB files & recover all records & objects in a new database
      • QuickBooks RepairRepair corrupt QuickBooks® data file & recover all file components in original form
      • MySQL RepairRepair MyISAM & InnoDB tables and recover all objects - keys, views, tables, triggers, etc.
      • Excel RepairRepair corrupt Excel (.XLS & .XLSX) files and recover tables, charts, chart sheet, etc.
      • BKF RepairRepair corrupt backup (BKF, ZIP, VHDX and .FD) files and restore complete data
      • Database ConverterInterconvert MS SQL, MySQL, SQLite, and SQL Anywhere database files
      • PowerPoint RepairRepair corrupt PPT files and restore tables, header, footer, & charts, etc. like new
      • File Repair ToolkitRepair corrupt Excel, PowerPoint, Word & PDF files & restore data to original form
    • Data Recovery & Erasure
      • Data RecoveryRecover lost or deleted data from HDD, SSD, external USB drive, RAID & more.
      • Tape Data RecoveryRetrives data from all types and capacities of tape drives including LTO 1, LTO 2, LTO 3, & others.
      • Virtual Machine RecoveryRecover documents, multimedia files, and database files from any virtual machine
      • File ErasurePermanently wipe files and folders, and erase traces of apps and Internet activity.
      • Mobile ErasureCertified and permanent data erasure software for iPhones, iPads, & Android devices
      • Drive ErasureCertified and permanent data erasure software for HDD, SSD, & other storage media
    • Toolkit
      • Exchange Toolkit5-in-1 software toolkit to recover Exchange database, convert EDB to PST, convert OST to PST, restore Exchange backup, and reset Windows Server password.
      • Outlook ToolkitComprehensive software suite to repair PST files, merge PST files, eliminate duplicate emails, compact PST files, and recover lost or forgotten Outlook passwords.
      • File Repair ToolkitPowerful file repair utility to fix corrupt Word, PowerPoint, and Excel documents created in Microsoft Office. It also repairs corrupt PDF files and recovers all objects.
      • MS SQL Toolkit5-in-1 software toolkit to repair corrupt SQL database, restore database from corrupt backup, reset database password, analyze SQL logs, & interconvert databases.
      • Data Recovery ToolkitSoftware helps to recovers deleted data from Windows, Mac and Linux storage devices. Also supports recovery from RAIDs & Virtual Drives.
    • Forensic
      • Email ForensicAdvanced email forensic solution for cyber experts to audit, analyze, or investigate emails & gather evidences.
      • Log Analyzer for MySQLAnalyze forensic details of MySQL server database log files such as Redo, General Query, and Binary Log.
      • Exchange AuditorExchange Server monitoring solution to automate audits, scans and generate reports ìn real-time.
      • Log Analyzer for MS SQLTrack & analyze MS SQL Server database transactions log files.
  • Our Partners
  • Lab Services
  • Support
  • About

Trending Searches

Data Recovery

Photo Recovery

Video Repair

iPhone Data Recovery

File Erasure Software

Exchange Repair

OST to PST

PST Repair

Raid Recovery

MS SQL Repair

Outlook Data File 5 minute read

Can I Delete Outlook OST Files without Losing Email Messages?

Eric Simson
Written By
Eric Simson
Kuljeet Singh
Approved By
Kuljeet Singh
stellar calander
Updated on
January 11th, 2022

One fine day, a user reported a system-hang issue. Troubleshooting detected overloaded space issue and space overload factor is caused due to voluminous OST files. Outlook users get so possessive about their emails that they do not want to part with the most unwanted emails and attachments even when they are aware that these mails hold no importance. What is the outcome? OST files grow abnormally huge in size and their chances of corruption also get higher. In fact, these enormous OST files can be counted as a database, due to their vast size. Such OST files are prone to corruption leaving no other option for the user but to “delete OST file”. Now the problem arises as to how to you access your Outlook when the OST file is deleted. Read on to understand the process of deleting the OST file without deleting Email messages.

When you delete ost file, it shows following message:

“Careful, if you remove this account, its offline cached content will be deleted, learn how to make a backup of the offline .ost file”

Make sure you Back-up the OST Files

Few experts don’t believe in backing up OST files as they have a preconceived notion that they can easily download these files again from Exchange Server, but as mentioned in the message stated above, it is important for data retention or when the files are deleted accidentally from Outlook. It is recommended that you backup your OST file into PST file format. Backup data in PST format enables you to access OST file data from different accounts if the same Outlook profile is not available.  You can also transfer OST file data to new computer by exporting it to PST format. Use Stellar Converter for OST to export Outlook data into PST file-format. Though Outlook’s Import-Export utility can also be used but the major limitation of this inbuilt utility is that user is unable to export other mail components like calendars, contacts, journals and more. Stellar Converter for OST Recommendations:

Stellar
Stellar

Steps to delete OST file without losing Email messages:

Step 1: Close MS Outlook application

Step 2: Go to Start and type Run in the search bar. Search for the OST file from the run command. Enter the following command in the Run Window: C:UsersUser NameAppDataLocalMicrosoftOutlook, as shown in the image below

delete ost file

Step 3: Click Ok and the location where the OST file is placed opens.

Step 4: Select OST file and click on Delete button. A confirmation message appears on the screen ‘Are you sure you want to move this file to Recycle Bin?’ Click on Yes button and the file gets deleted.

Once the OST file is deleted, you may feel the need to recreate the file to let the Outlook work efficiently. This can be done by creating a new OST file with a different pathname and synchronize it with Exchange. Configure your Outlook and initiate working in offline mode with the newly created and synchronized OST.

Steps to create new OST

Once you have received the message of successful deletion of OST file, verify if it is available on Outlook. Once you are sure, follow the below mentioned steps to create and synchronize new OST:

Step 1: Quit MS Exchange Client (MS Outlook)

Step 2: Rename the existing OST file. This ensures that file name is different for each file.

Step 3: Restart MS Outlook in Online Mode

Step 4: You will receive the following error message- “The file “C:\Exchange directory\file name.ost could not be found”. Click OK

Step 5: Got to Offline Folder File Settings dialog box, click OK button

Note: You can also alter the path and the file name of the OST file using this dialog

Step 6: You will receive an error message- “The file c:\Exchange directory\file name.ost’ could not be found. Would you like to create it?” Click Yes

Note – MS Outlook will start in online mode

Step 7: On the Tools menu, click Synchronize-All folders

This way, the newly created OST file gets synchronized with the Exchange Server. Now you can configure Outlook to initiate working in offline mode by using the new OST file.

Why we delete OST file?

We are forced to delete the OST file due to excessive file-corruption. Corrupt OST file hampers the working of your Outlook. It should be deleted as per the procedure mentioned above. You can also use OST to PST Converter by Stellar Data Recovery to repair corrupt file without deleting Outlook OST file.

The unprecedented situation

OST corruption is beyond repair and synchronization is not possible due to inaccessible EDB file! In normal circumstances, when corrupt OST files are deleted by the users it may not result in deletion of Email messages as users are able to retrieve Outlook data by synchronizing data with Exchange server but here the EDB file is also inaccessible. In the event, when Emails are crucial for correspondence, you have to find a solution to either repair the corrupt OST or compromise with ineffective communication.

Situation is avoidable with Stellar converter for OST software. This software tool helps users to repair the corrupt OST files and retrieve data in their Outlook. Wonderful Graphical User Interface assists the user at every step in finding and/or selecting the corrupt OST file, submit this file in the software for scan and repair and ultimately retrieve the file as corruption-free OST.

Free download

All in All

Communication is the lifeline of the organization. If communication is hampered, users are unable to work in perfect harmony. In that case, corruption in OST is certainly not permissible. Click on to install Stellar converter for OST software which scans corrupt files and folders and repairs all mail components and saves them in a new PST. Newly formed PST can be imported to Outlook for mail-data retrieval. All email messages are intact and data is available in original format minus the corruption. To cut the long conversation short, mails are the most valuable data which should be retrieved at all cost. With OST to PST Converter software, users remain free from unwieldy processes and utilize their valuable hours in productivity and business operations.

Please check our MVP review to get more insight about OST to PST converter from stellar.

About The Author

Eric Simson

Eric Simson is an Email Platform Consultant and is associated with Stellar Data Recovery from last 6 years. He writes about the latest technology tips and provides custom solutions related to MS Outlook, MS Exchange Server, Office 365, and many other Email Clients & Servers.

Best Selling Products

Stellar Converter for OST Corporate

Stellar Converter for OST Corporate

Powerful Tool to Convert Inaccessible OS

Read More
Stellar Converter for OST Technician

Stellar Converter for OST Technician

Advanced Tool to Convert OST, & Split or

Read More
Stellar Converter for NSF

Stellar Converter for NSF

Powerful Tool to Convert NSF File into P

Read More
STELLAR TOOLKIT FOR OUTLOOK

STELLAR TOOLKIT FOR OUTLOOK

Manage Outlook Data Files A Combination

Read More

14 comments

  1. Robert Marra says:
    June 28, 2020 at 12:07 am

    My ost file is named with (1) at the end. If I delete the file and recreate it as you described, will the new file still have the (1) in the name?

    Reply
    1. Charanjeet Kaur says:
      August 12, 2020 at 1:11 pm

      Hi Robert,

      Yes, the recreated OST file will have the same name as that of the original file.

      Reply
  2. Ron Hunter says:
    January 9, 2019 at 5:50 pm

    So, I have a personal computer with all my e-mails, and I set up this account for my work computer- if I remove it from my work computer, will it affect what I currently have on my personal computer?

    Reply
    1. Eric Simson says:
      January 10, 2019 at 5:56 am

      Being a smart user, you should do these hit-trial tricks after taking a safe backup of OST file.

      Reply
  3. William says:
    June 27, 2018 at 12:51 pm

    It would be better to consult any Outlook expert before making any final decision.

    Reply
    1. Eric Simson says:
      June 29, 2018 at 3:14 am

      To eliminate the burden of Outlook expert/consultant, you can take the assistance of Stellar Converter for OST.

      Reply
  4. Luke says:
    May 16, 2018 at 12:23 pm

    I can’t take any risk without the availability of third-party tool as a rescue management. For non-technical users, it can lead towards data loss.

    Reply
    1. Eric Simson says:
      May 17, 2018 at 5:54 am

      Yes!

      Corporate companies also prefer third party tool to ensure bulk recovery without any data loss.

      Reply
  5. Salvatore Osborne says:
    November 28, 2017 at 3:47 am

    Is it feasible?

    Reply
    1. Eric Simson says:
      November 29, 2017 at 6:44 am

      Yes!

      Try the manual method and share your experience with us.

      Reply
  6. Delores Wood says:
    November 23, 2017 at 11:19 am

    I too was scared of deleting my OST file but thanks for covering all the guidelines. I’ll definitely remember to keep a backup of my OST

    Reply
    1. Eric Simson says:
      November 24, 2017 at 4:41 am

      Hi Delores,

      If you face any trouble, then feel free to contact our technical support team.

      Reply
  7. Nora Nathan says:
    November 14, 2017 at 11:13 am

    Thanks for providing such a helpful and informative article! I too was facing a lot of Outlook errors and the only way to resolve it was to delete it.

    I did not want to take the risk, so I tried Stellar OST to PST Converter. With the help of this software, my Outlook client is again working perfectly.

    Reply
    1. Eric Simson says:
      November 15, 2017 at 4:39 am

      Great!

      Reply

Leave a comment Cancel reply

Your email address will not be published. Required fields are marked *

Image Captcha
Refresh Image Captcha

Enter Captcha Here :

Table of Contents    arrow

Categories

offer banner

Related Posts

related post
Outlook Data File

How to Fix “This is not a valid file name” Error in Outlook when Sending Email?

Stellar Author Eric Simson February 13, 2023 Read More
related post
Outlook Data File

[Solved] “There are more items in this folder on the server. Click here to view more on Microsoft Exchange”?

Stellar Author Shelly Bhardwaj January 24, 2023 Read More
related post
Outlook Data File

[Solved] Emails showing in Outbox on the server but not visible in Outlook user’s Outbox?

Stellar Author Ravi Singh January 4, 2023 Read More

Free Trial for 60 Days

Technology You Can Trust A Brand Present Across The Globe

  • tuv1
  • tuv2
  • Nist
  • hipa

Stellar Official Website

Stellar Data Recovery Inc.
48 Bridge Street Metuchen,
New Jersey 08840,
United States

ALSO AVAILABLE AT

ALSO AVAILABLE AT

About

  • About us
  • Career
  • ISMS Policy
  • Privacy Policy
  • Terms of Use
  • License Policy
  • Refund Policy
  • End User License Agreement

RESOURCES

  • Blog
  • Articles
  • Product Videos
  • Knowledge Base
  • Case Studies
  • Whitepapers
  • Software Catalog

NEWS & EVENTS

  • News
  • Events

PARTNERS

  • Affiliates
  • Resellers
  • Distributors

Useful Links

  • Contact Us
  • Support
  • Special Offers
  • Student Discounts
  • Awards & Reviews
  • Downloads
  • Store
  • Sitemap

Stellar & Stellar Data Recovery are Registered Trademarks of Stellar Information Technology Pvt. Ltd. © Copyright 2023 Stellar Information Technology Pvt. Ltd. All Trademarks Acknowledged.

Follow Us Facebook Twitter Linkedin Youtube

  • Notron
  • dcma

Subscribe to our newsletter!

Its good time to subscribe and get the latest promtion

With subscribing you agree with our Terms & Conditions

This website uses cookies in order to provide you with the best possible experience and to monitor and improve the performance of the site in accordance with our cookie policy. You can reject cookies at any time in your browser settings.

cookies-cross
Got it