Increase attachment size limit on Outlook by adjusting registry settings or using cloud storage options. Send larger files easily without hitting size restrictions.

In this article, we will demonstrate how you can increase the Attachment Size Limit in Outlook by editing the Registry, which is 25MB by default.

A PST file can store data of define size limit, if the PST gets full the Outlook application will not work. So, we should increase the size of PST.

Detailed information on how to determine the appropriate Page File size for 64-bit versions of Windows 11/10 operating system.