How to Fix Large PST File Crashes Outlook Using 4 Easy Ways?
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Quick Answer: Many users encounter the issue of “large PST files crashes Outlook”, and one of the primary reasons behind that is the PST file size limit. Thus, in such a case, splitting the file, reducing its size, and eliminating copied data is the best solution. All of this can be achieved easily using professional utilities and various manual ways.
You are not alone if you also try to open Outlook and find out that a large PST file crashes Outlook. This is a very common issue that most Outlook users encounter at least once in their lifetime. Thus, this error basically happens when Outlook becomes unable to support its regular PST file size and therefore asks for a healthy repair, splitting, and compacting.
In this blog post, we will cover the common causes, manual and professional methods, expert tips, and so on. Hence, by the end of this article, you will become a pro at resolving this issue without any assistance.
Common Reasons Causing Large PST File Crashes Outlook
Apart from the Outlook setup, the accepted PST file size and health also matter a lot. Thus, the commonly found causes are as follows:
- Every Outlook PST file has a version and its fixed size limit. So, if your file exceeds that and you try to open it in Outlook, this problem occurs.
- If your PST file contains large attachments, it automatically slows down the process and results in such errors.
- Duplication of data inside the file due to incorrect rules or faulty add-ons fills up the mailbox with such unwanted data and causes this issue.
- Apart from this, if the file is damaged, then as well Outlook does not support it and ends up with this error.
- Over and above that, low disk space, anti-virus settings, or issues related to locked PST files also contribute to this problem and make large PST files crash Outlook.
Automatic Solution to Fix Large PST Slows Outlook
From the beginning to now, you must have understood why large PST files slow Outlook. According to those reasons, you can use professionals recommended automatic solution, BitRecover PST Splitter Tool, to securely handle large PST files & to prevent Outlook from crashing. This tool breaks oversized Outlook PST files into manageable parts, which helps users to avoid PST size limitations.
Quick Steps of Automatic Solution
- Open the suggested program on your computer system > Next.
- Choose the “Configured Outlook” option > click Next.
- Select required PST folders from the preview panel > Next.
- Then, set “Destination Path” & Split Option as per your needs.
- Finally, click on the “Split” button to start the splitter tool.
- Done! Tool automatically opens the stored location where you saved your split PST files.
Benefits of Using Automatic Solution
- This tool provides a dual upload option for PST files, like a configured Outlook profile & select folder or file.
- Using this tool, users will swiftly & securely split any size PST file, while ensuring data integrity.
- The tool is capable of splitting even the longest PST files effortlessly, without freezing.
- This tool provides various splitting options as per the user’s requirements.
- Users are allowed to choose necessary folders of PST files selectively to reduce size.
- This tool is compatible with all the latest versions of Microsoft Outlook & Windows OS versions.
- Using this utility’s additional features, users can split PST files by year and size.
- Its user-friendly interface makes this tool so easy to use & provides an uninterrupted processing experience while splitting bulk PST files.
These are the benefits that you will get while using this automated solution to fix large PST file slow Outlook issues.
How to Fix Outlook Crashes When Opening Large PST File? Manually
In the upcoming sections, you are going to read three manual methods to solve Outlook freezes with a large PST file. To use all, you need to follow the given instructions carefully to fix the large PST file issue.
1st Method: Fixing Large PST File with Archiving
While Outlook doesn’t offer a built-in feature to archive large PST files, you can still manage their size. Use Outlook’s ‘Archive’ or ‘Import/Export’ options to move mailbox PST data to a file, effectively reducing its size.
- Open Outlook on your computer system.
- Go to File > Tools > Clean Up Old Items.
- Now, choose “Archive this Folder and all Subfolders” > enable the “Include items with Do not Auto Archive” option.
- Finally, click on OK.
2nd Method: Solve Large PST Using Compacting
Outlook 2013 & later versions provide handy features called “Compact Now” to remove unused space within the PST file. This helps compress the file & optimize its performance. You can manually access this feature by following the steps.
- Open Outlook & choose File.
- Go to Account Settings > choose Account Settings.
- Switch to the Data Files tab > select the PST file > click Settings.
- Choose the Compact Now button.
- Done.
3rd Method: Remove Duplicate Data
Duplicate emails are a common reason behind oversized PST files. By removing these duplicates, you can easily reduce PST file size. Removing duplicates from PST files can be a complex task, as various factors contribute to their existence. You will need to address the root cause, such as misconfigured rules, improper mailbox settings, or faulty third-party applications like Outlook Duplicate Remover.
Drawbacks of Manual Workarounds
Manual methods mentioned above can be effective. Nevertheless, they come with their own drawbacks:
- Permanent Data Loss: Using manual processes incorrectly can result in permanent data loss. It can be devastating to users who want to split Outlook PST files.
- Data Security: Manual methods do not guarantee security. It poses a potential risk.
- Time-Consuming: Manual processes are often time-consuming & require technical knowledge, adding unnecessary issues to an already difficult situation.
Final Thoughts
At the end of this article on the topic “Large PST File Slow Outlook.” We have described the top four working & practically tested techniques to solve Outlook crashes when opening a large PST file. Found that using an automatic solution is the quickest & safest way to split PST files into smaller parts without affecting data integrity & its files.
On the other hand, users who choose manual approaches will face some technical troubles, such as loss of data loss, breach of data security, & consumption of time. Now, its depend on you which techniques you are going to choose to save your time, efforts & data from permanent loss.








