Blog Archives

Change the Maximum Size Limit for Outlook PST and OST Files

Microsoft Outlook stores mailbox data in PST and OST files. By default, modern versions of Outlook typically have a file size limit of 50 GB for Unicode PST and OST files. If Outlook reaches this limit, users may see errors stating that the Outlook data file has reached its maximum size. Microsoft provides registry values […]

Outlook Email Calendar Permissions

Outlook calendar permissions control how other users can see or interact with a mailbox owner’s calendar. These permissions are critical in Microsoft 365 environments where scheduling visibility, executive support, shared resources, and delegated access are part of daily operations. While the permission levels themselves are consistent, the way permissions are assigned depends on the platform […]