4 ways to split oversized PST files that will enhance your Outlook

Oversized PST files are difficult to manage. Agreed!

It is a widely acknowledged fact amongst Outlook users. But, it's not something we cannot get hold of. We all know that PST files have a size limit imposed upon them. If size of PST file exceeds this limit, you will surely face lot of issues. It is more likely to arouse problems that may prevent to load or open Outlook data. Even worse, you won't be able to add new data.

So, don’t be surprised if you come across some errors like

“xxxx.pst cannot be accessed - 0x80040116”


“Errors have been detected in the file xxxx.pst. Quit all mail-enabled applications, and then use the Inbox Repair Tool”.


“The file xxxx.pst has reached its maximum size. To reduce the amount of data in this file, select some items that you no longer need, then permanently (shift + del) delete them”.


“The file could not be added to the folder. The action could not be completed”.

Well, these are not all but some of the error messages that might crop up if you still push your luck and try accessing or loading an oversized PST file.

Not only this, Outlook’s performance or the pace with which it works is degraded to a large extent. Therefore, we reach to a conclusion that oversized PST files are nothing but an inconvenience to its users.

No regular Outlook user wishes to experience a sluggish version of its beloved office assistant. There are certain course of actions to make up for it. You can know about it through ways to improve Outlook performance.

The drawbacks of oversized PST files can be overcome if the files are split into several smaller PST files. Now, if you do not wish to get lost in the pool of PST files while finding the one you instantly require, there is a solution to it as well. PST files can be split according to your requirements. They can be split on the basis of their 1) Size; 2) Date; 3) Year; 4) contact.

Let’s talk about the ways you can split your PST:

  1. Splitting PST by size: A large PST file can be split into smaller PST files of definite sizes. MS Outlook 2016 offers a size limit of 50 GB. If in case, you reach or cross this limit, you can use as a way to keep your data intact by splitting them into multiple other PST’s of smaller sizes. This will also avoid corruption of oversized PST files.
  2. Splitting PST as per Date: A lot of Outlook users will agree that it is convenient if all the PST files are split as per a specified date. Files if separated according to multiple date ranges, will solve issues of finding and sorting the files permanently. You can then store the different dated files in different locations.
  3. Splitting PST as per Year: This is a unique way to split your PST files. You can classify them on the basis of year. You can create a benchmark year sort of thing and can split the files formed before and after that year. By doing this, you are also creating two separate files of varied sizes.
  4. Splitting PST by mail id/ contacts: This is one way of creating an absolutely new PST file. This file will contain mails received from or sent to a particular mail id/contact.

Splitting PST is a risky procedure. If attempted in an improper way or if anything goes wrong midway, there is a probability that your .pst file may get damaged or corrupted to some extent. You might face difficulty in accessing them. When such a thing happens you can get your .pst files repaired using Outlook PST repair software.

4 ways to split oversized PST files that will enhance your Outlook was last modified: December 6th, 2019 by John Harris

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