Outlook OST File Size Not Reducing After Archiving Error – Fix it

Manual Method to resolve “OST file size not reducing after archiving

We will discuss the manual methods to fix OST file size not reducing after archiving.

Method 1: Manage the size of Outlook’s mailbox

For this, users can take the help of Mailbox-cleanup tool to view the size of the entire Mailbox of Microsoft Outlook. With this, the user can see the size of the particular folder. Users can archive the older emails to an archive Outlook data file & after this, they can empty the folders of deleted-items. Follow the steps to manage the size of the mailbox of Outlook data file.

1. Firstly, Click on the File tab
2. Now, click on Tools & then click on Mailbox Cleanup
3. After this, Follow any of these mentioned steps:
4. For viewing the size of the entire mailbox and of an individual folder, click on view-mailbox-size

If you wish to find the older email items, do this:

1. Choose to find items older than x, which is the required values days
2. Then, Put in a number between 1 & 999
3. Finally, Click on find
4. Choose to find items bigger than X KB
5. Then after, type in a number between 1 & 9999
6. Now, click on Find

For moving older items in the mailbox to an archive Outlook-Data-File, Then click on AutoArchive

Note: How to Convert OST to PST in Outlook?

Method 2: Compact the size of OST data file

Offline storage table file belongs to Microsoft exchange server account. In addition, these files are bot deleted whereas the exchange server runs in the process of deletion. So only shrinking of files will be another option to enhance the performance of Outlook.

Follow these steps to compact OST files you can follow these steps one after the other.

1. Delete or erase the email which is not needed any longer
2. After this, open the Folder-List view
3. At the bottom side of the Navigation Pane, Click on folder list icon. You may also press CTRL+6 for this.
4. Now, right-click on the folder of deleted items once again the Navigation Pane
5. Then after, click on Empty folder. >>File>>Account settings
6. Once it is done, click on Data files tab, click on the file that needs to be compacted.
7. Next, click on settings>>Advanced tab>>Outlook-Date-File settings
8. Click on OK
9. There is no requirement of present Outlook on the compacting process of offline OST file is done
10. If you want to delete any item, from offline and online folder do this:
11. Next click on settings>>Advanced tab>>Outlook-Data-File Settings
12. Choose the item that needs to be erased
13. Then after press Delete

This is the manual method through which you can fix Outlook OST file size not reducing after archiving error. But for performing these methods you need a technical background. This method is too lengthy as well as tough. There may be a chance of losing data during the execution.

Know: How to Solve OST File Not Recognized by Outlook Issue?

Alternative Method

In order to fix Outlook OST file size not reducing after archiving Error, you need OST to PST Converter Tool. This tool has a user-friendly GUI. This is easy to use, even a guy with a non-technical background can also install & run the software. The process of execution with this tool is very easy. It keeps the data secure & private after the successful execution.

Also Read- Fix Username OST is in Use and Cannot be Accessed

Conclusion

In this blog, we have shared manually as well as an alternate method to fix the outlook OST file size not reducing after archiving error. The manual method will take time & this is too lengthy. You need a technical background. But automated methods will do work quickly & securely. You don’t need more technical background for performing this method.

About The Author:

Simran Bhatia

Simran Bhatia is a technical content writer engaged in writing clear, concise, and SEO-optimized content. With a background in computer science and a passion for writing, I thrive to deliver complex technical content in simple layman terms.