Split Large PST Files
PST Splitter helps to Split Large Files Easily
Resolve “PST has reached its maximum size” in Outlook

Microsoft Outlook is advance and most popularly used email client application. It provides you safe and secure platform to transfer emails, attachments and other information. In MS Outlook 2002 and earlier version, the file size limit of the PST file is set to 2GB as per ANSI(American National Standard Institute) format. If the file goes beyond 2GB, it easily gets corrupted and damaged, and yo may receive error message like “ PST has reached its maximum size”.

Regardless of that, in Microsoft Outlook 2003 and 2007 version, default file size limit of PST file is set to 20 GB (Unicode format). However, instead of that, the concert of pst corruption issues still remain the same. For an instance, when you try to open Outlook or try to copy files, you may receive following error message:

“cannot copy the items. The pst file has reached maximum size. To reduce the amount of data in this file, select some items that you mo longer needed, then permanently (Shift+Del) delete them”


The above error message occurs due to the oversized pst file. This causes inaccessibility to the PST file , you cannot add any new data to it, you cannot be able to send/receive emails, set appointments, makes notes or other. To get rid of such issues, it becomes essential to split pst file. Microsoft has provided a tool named pst2gb to restore the oversized pst file. However, in some cases, this tool fails to resolve the oversized pst file and even if it proceeds, some of the data will be truncated and lose permanently.


To resolve pst file has reached maximum size, follow the below mentioned steps:

  • Open PST and delete all the items that are no longer needed
  • Then, make new Outlook profile and fetch the data from the original one
  • If you have Outlook 2003 or higher version, then you can convert oversized pst file into new Outlook 2003 Unicode format
  • If you don't have Outlook 2003 version, then you can split oversized pst file into smaller partitions


You can fix pst file has reached maximum size with the help of third party split pst tool. It is best splitting tool to get rid of oversized pst file issues.


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