ost).Ī Personal Folders file (.pst) is an Outlook data file that stores your messages and other items on your computer. Introduction to Outlook Data Files (.pst and. Outlook Data Files (.ost) are always copies of items that are saved on a mail server and do not have to be backed up like Outlook Data Files (.pst). This type of data file is also used for accounts that you set up with the Outlook Connector for (formerly Hotmail).
Offline Outlook Data Files (.ost) are used when you have an Exchange account and want to work offline or use or use the default Cached Exchange Mode.When you want to create archives or back up your Outlook folders and items on your computer, such as Exchange accounts, you must create and use additional. Outlook Data Files (.pst) are used for POP3, IMAP, and web-based mail accounts.The primary differences between the two types of Outlook data files are as follows: To allow you to work with your messages even when you cannot connect to the mail server, a second type of data file that is named an Offline Outlook Data File (.ost) is kept on your computer. If you are using a Microsoft Exchange account, your items are usually delivered to and saved on the mail server. An Outlook Data File (.pst) is used for most accounts. Exit the Reset Outlook Recent Addresses tool.There are two types of Outlook data files used by Outlook for Windows.
The list of names that Outlook uses is a combination of stored contacts, the company directory, and recent contacts. When you compose an email message and add people on the To, Cc, or Bcc line, Outlook suggests names as you type characters. This tool deletes all recent addresses instead of you having to manually delete addresses one at a time. The Reset Recent Addresses tool lets you reset recent addresses that Outlook stores. Exit the Default Mail Application tool.In the Default Mail Application dialog box, select, and then select Make Default.Download and open the Default Mail Application tool.Outlook isn't the default email application until you change that setting. Selecting a mailto: link opens the default email application. Use this tool if you want Outlook to open a new email message when you select a mailto: link in an email message or on a website. The Default Mail Application tool lets you easily make Outlook the default mail application. Exit the Outlook Reset Preferences tool.This closes Outlook if it's open, and then resets the preferences to their default settings. Download and open the Outlook Reset Preferences tool.Also, resetting Outlook preferences doesn't remove email messages or account settings. Note The Outlook Preferences file doesn't contain all the preferences for the application. This tool shouldn't be needed most of the time. This tool also stores the settings for the Outlook window size and position. Use this tool to reset any customizations that you've made to Outlook by using the Preferences option on the Outlook menu.
The Outlook Reset Preferences tool resets all Outlook preferences to their default settings. A spotlight search will be slower and may not finish while the index is being repaired.Įxit the Outlook Search Repair tool when you receive the following message after the repair is completed: Outlook doesn't have to be open when the repair occurs. This may require an hour or more, depending on the size of your Outlook profile. The Outlook Search Repair tool displays a "Reindexing, please wait" message while it works.