Repair Guide: Outlook Data File Has Reached the Maximum Size

Have you ever encountered the “Outlook data file has reached the maximum size” issue? What should you do when the Outlook data file is full? Now read this post on MiniTool to find out a couple of feasible ways to fix it.

Microsoft Outlook is one of the most common email clients used to send and receive emails. Though it is a powerful personal information manager software system, sometimes you may encounter some errors when using Outlook. For example, you may receive error messages like “There is no default mail client” or “The message cannot be sent right now”.

Today we are going to show you how to resolve another Outlook error – “Outlook data file has reached the maximum size”.

Outlook data files, such as Personal Storage Tables (PSTs), store copies of mail items on your local system. When the size of OST files increases and reaches the file size limit, you will get the error message “Outlook data file has reached the maximum size”. Now let’s see how to get rid of it.

How to Fix Outlook Data File Has Reached the Maximum Size Windows 10

Solution 1. Delete Unwanted PST Files

To reduce the file size of PST files, you can try to delete all old emails. You can filter unwanted emails and delete them manually or try the steps below to clean up your mailbox.

Step 1. In Outlook, click File > Info > Tools > Mailbox Cleanup.

Step 2. In the pop-up window, you can make use of the Find feature to specify old items by date and kilobyte. Then delete old emails to free up space. Or you can choose to carefully empty the deleted items folder and delete all alternative versions of your items.

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Solution 2. Archive Outlook Files

When facing the Outlook data file has reached the maximum size error, you can archive the emails. Email archiving moves data to a secure offsite server or cloud environment. Archive data takes up less space, thus helping you reduce PST file space usage.

How to archive emails?

Step 1. Open your Outlook application and then click File > Info > Tools > Clean Up Old Items.

Step 2. Select the mailbox folder you want to archive and set up the date next to Archive items older than, then click the Browse button to choose a wanted location to store the archived files. Finally, click the OK button.

Solution 3. Compact PST Files

Compacting the PST file is also an effective way to get rid of the “Outlook data file has reached the maximum size” issue.

Step 1. Click on File > Account Settings > Account Settings.

Step 2. Move on to the Data Files section and click the Settings button.

Step 3. In the new window, go to the Advanced tab, and click Outlook Data File Settings.

Step 4. Click Compact Now and then OK.

Solution 4. Increase PST File Size Limit

In addition to compacting the Outlook data file, you can increase the PST file size limit by making changes to the Windows registry to fix the “Outlook data file has reached the maximum size” problem.

Note:

For a detailed guide to increasing the PST file size limit, you need to refer to this article: How to Fix and Increase the Outlook File Size Limit.

Conclusion

To sum up, this article shows you how to fix Outlook data has reached the maximum size Windows 10. Hope the methods listed above are beneficial to you.

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