Your Outlook Data File is composed of a file header, located at the beginning of the document, and the actual data that makes up your personal folders. Contained in the header is information about the ...

Offline storage table (OST) and personal storage table (PST) are two different Outlook data files used to store a copy of mailbox items on local storage. Outlook creates a PST file when you add a POP3 ...

Some users have reported that when they open MS Outlook, they receive an error message that Outlook is using an old copy of your Outlook data file (.ost). For some ...

If the Outlook app is acting up, you can use this guide to troubleshoot and fix most issues. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. The ...

Damaged data files could be one of the main reasons why you get the error message saying “Cannot Expand the Folder; Not Enough Memory”. There are two types of ...

If you cannot open Microsoft Outlook for some reason, it can make communicating with employees, clients or suppliers rather difficult in some cases. There are several reasons you may not be able to ...

You use Microsoft Outlook to manage your email, your appointments, your contacts, and your to-do lists. In other words, you use it to manage your work life. So when this program doesn’t behave the way ...