1. How To Delete Outlook Ost File On Mac
2. Ost File On Mac Os
3. Delete Ost File On Mac
4. Ost File On Mac Shortcut

It is good news for Mac OS users because now they can easily read OST file through OST Viewer Mac software that is fully loaded with multiple advanced features like Mac users can easily open corrupted OST files without having trouble. Nowadays, MS Outlook is most commonly used by technical users. While using Microsoft Outlook, email messages, calendar, tasks and other items are saved on your system. These saved items of Outlook are stored in Outlook Data File as .pst and .ost format. Outlook Data Files i.e. .pst is used for POP3, IMAP and web based mail accounts. Whereas .ost files are used when you have exchange account and want to work offline or use the default cached exchange mode.

Folders which are found in your mailbox are generally the replicas of offline folder on the system where Microsoft Exchange is running. This makes it possible to work with the content of folder located on server when not connected to the network and when again connected, update the folder and its corresponding server folder to make the contents of both identical folders. This procedure is known as synchronizing folders. You can easily add, delete and change the contents of offline folder exactly as same as folder located on a server.

What is OST file?

Once the OST file is converted then you can import the converted file in Outlook 2016 because it supports Mac OS X by following the given steps: Step 1 - Open Outlook 2016 in your machine. Step 2 - Once it is open, go to file menu choose Open and Export click on Import /Export option.

• Compatible with ANSI & Unicode OST Files This Open OST Tool is an authoritative software for Windows & Mac OS users that supports both old ANSI and latest Unicode characters OST files. It is fully consistent with OST files of Microsoft Exchange Server or Outlook 2019, 2016, 2013, 2010, 2007, 2003, 2002, 2000, etc.
• Users can import large sized OST files to Mac Outlook as the tool is compatible with large sized offline files. OST to OLM Converter is capable to export multiple.ost files to.olm (Mac Outlook archive) files. It is a Windows OS based product which supports all latest and previous 32 bit, 64 bit Windows Operating System.
• The latter, namely outlook ost file, stores items offline. The former, in its turn, stores data like attached documents, emails, all the contacts, and notes online. Now when you possess the basic knowledge thereon, we will proceed with more detailed clarifications on how to transfer outlook settings to new computer, so keep reading if you want.

MS Outlook created OST format which is a short form of Offline Storage Table files. As soon as server is connected, OST files store the offline work. Later, MS Outlook turns online and all the emails and information which are saved is respectively delivered to the client immediately. In certain circumstances, when there is a limited network or unreliable then in that situation OST proves to be a great and excellent process.

Some advantages of OST file

1. OST files have great importance while working offline. Many users across globe make use of this method for safe and secure work. Because of OST, there will be no loss of work, and no matter whether the exchange server is connected or not.
2. It is flexible as you can easily work offline without exchange server
3. Serve as a backup in case of unintentional deletion of data. User can easily recover emails anytime and save them in PST format.

Reason of Corruption

OST file store mailbox information of MS Outlook when not connected to the Exchange Server. Many situations immediately occur when you are unable to access the information of Outlook mailbox. It could be due to the corruption of OST file. Below are some issues of OST file corruption…

• Exchange server crash
• Attack of Malicious Virus
• Exchange server downtime
• Large size of OST file
• Corruption of database
• Unintentionally deletion of user account

This is the major reason of why OST file became inaccessible. Due to this you have to go through severe data suffering condition.

How to view corrupted OST file?

Use OST Viewer Mac tool to view corrupted OST file. OST Viewer for Mac utility is an intelligent solution designed by top expertise. It is easy and very simple to use. Both technical and Non-technical users can easily make use of OS X OST Viewer. User can simple view unlimited corrupted OST file with attachments. No MS Outlook installation required.

OST Reader Mac is designed in a way that it fully supports ANSI and UNICODE file format of Outlook data files. It is most commonly used by forensic investigators to investigate the evidence related to OST file. A read-only scan is performed by utilizing OST File Viewer Mac. This portable utility is technically designed which allows users to open and view .ost files. It maintains the message formatting during message preview. OST File Viewer Mac is capable to view files ranging from 2 GB to 30 GB. It is basically designed for Mac but Windows users can also make use of this portable utility.

Summary: OST file has reached the maximum size is an error message that appears when the size of OST reaches its configured file size or threshold limit. In this guide, we have shared a few fixes and solutions that can help you resolve the OST file size issue in Windows Outlook.

OST or Offline Storage Table is a replica of the user mailbox on the Exchange server. The file is stored on the system locally and syncs the changes made to Outlook with the user mailbox on the server. When the size of OST increases and reaches its threshold or file size limit configured on the system, the error OST file has reached the maximum size may appear.

The error may also appear when the OST file size reaches the configured mailbox size limit on the Exchange server. In such cases, the changes you make are not saved or emails you send are not sent. Similarly, you stop receiving any new mails and face several other issues until you resolve the error.

How to Resolve OST Has Reached the Maximum Size Error?

One way to resolve the error is to ask the Exchange admin to increase the mailbox size limit. Once the mailbox size is increased, it should probably fix the error.

However, the OST error will soon appear as it reaches the new threshold limit.

But if you control the OST file size, there won’t be a need to increase the mailbox size limit. Thus, we have shared a few methods that will help you reduce the size of the OST file and resolve this issue.

Method 1: Compact OST File to Reduce Size

Outlook has an option to compact .OST and .PST files, which compresses the OST or PST file and reduces the file size. The steps are as follows,

• Delete any items that you do not want to keep and empty the Deleted Items folder
• Click File > Account Settings >Account Settings

• Under the Data Files tab, select the OST data file that you want to compact
• Click Settings> Advanced > Outlook Data File Settings…

• Click Compact Now and then click OK

How To Delete Outlook Ost File On Mac

This will compress the OST file to an extent and may resolve the issue temporarily.

Method 2: Clean Up Mailbox

To fix the issue for a long time, you can choose to clean up your mailbox. However, this method requires you to delete older emails. The steps are as follows,

Ost File On Mac Os

• Click the File> Info and click on Cleanup Tools beside Mailbox Cleanup

• Click on Mailbox Cleanup… option

• You can view your current mailbox size stored in local OST file and on the server by clicking on the ‘View Mailbox Size…’ button

• Enter the number of days to find the older emails and delete them to reduce the size of the OST file and mailbox on the server
• You can also Find items larger than, Empty Deleted Items folder, View Deleted Items Size, View Conflicts Size, or Empty Conflicts to reduce the OST file size

Further, you can look for large emails, download all the attachments, and then remove the attachments from emails to reduce the OST file size.

Method 3: Use Registry Key to Configure OST File Size Limit

If you don’t want to delete older emails or remove attachments from emails, there’s an alternative way, where you can use the registry to reconfigure the OST file size limits by changing the registry key’s entries and values. There are four registry entries that you can edit and set the maximum size to which OST can grow,

• MaxLargeFileSize and WarnLargeFileSize

This lets you set the Unicode formatted OST file size limit to a maximum of 50 GB for Outlook 2010 and later or 20 GB for Outlook 2007 and 2003

• MaxFileSize and WarnFileSize

Refers to the ANSI formatted OST file size limit to a maximum of 2 GB (Outlook 2000)

The following are the default and valid range of ANSI and Unicode formatted OST that you can change.

For Outlook 2019, 2016, 2013 and 2010

To set the new or reconfigure the OST file size limit, you can refer to this guide on Microsoft Support page.

Delete Ost File On Mac

Method 4: Move Mail Items from OST to PST or Archive Folder

Instead of deleting older emails, you can move them to a local PST or personal folder file. This can help reduce OST size significantly while keeping all emails intact. To do this, follow these steps,

• In Outlook 2013, go to File > Cleanup Tools > Archive. In Outlook 2016 or 2019, go to File > Info > Tools > Clean up old items
• Then select the Archive this folder and all subfolders option
• Select a folder from the list for archive
• Then choose the ‘Archive items older than:’ date
• Click on Browse to choose a save location and click on OK

You can also create a new folder in Outlook and move all emails with large attachments to this folder. Then by following the above steps, archive the folder. This will help you reduce the OST file size and keep large email items.

Also, now that the archive folder is created, you can move more items to this folder manually to keep control on the OST size.

However, it’s important for you to note that the Archives are saved in a personal folder file or PST format. And as you move more and more items in the archive folder, the PST file size will grow larger, which can lead to PST file corruption and data loss.

So, you can either create multiple archive folders to keep PST file size in control or use an OST to PST file converter, such as Stellar Converter for OST, to reduce the OST file size without the risk of PST or data corruption.

Stellar Converter for OST helps you convert the OST file to PST with 100% precision and integrity. After the OST file scan, you can select the mail items or email folders and save them to a PST file. It provides you with filter options that you can use to filter large or older emails and save them to a PST file. While saving PST, it provides the option to compact or split the PST file that helps reduce the PST file size and avoid any corruption.

Ost File On Mac Shortcut

You can then later add the PST file to your Outlook account and access all the emails with attachments.

Further, the software can help you in times when Outlook becomes inaccessible as your profile is deleted or disabled from the server. It will help you convert and migrate your orphaned OST file data to PST file.

Conclusion

When OST reaches the maximum size, it prevents users from accessing their Outlook email account and restricts communication. To fix this, you can follow the suggested manual methods to reduce the OST file size. You can also convert OST to PST by using a professional OST to PST converter tool. The software features option to split and compact the PST file. This helps keep PST size in the limit as PST files tend to get corrupt or damage when the size grows larger.

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