text: The e-mail program Outlook is used by many companies and private individuals to help organise messages and appointments in an Outlook calendar. Outlook's search function is indispensable to people who receive and answer many e-mails daily. The advantage is that you do not have to search through all folders, but instead can view a filtered section of relevant messages by entering a search term.
  What kind of folders or time you want to filter can be set up with just a few clicks before pressing search. This makes it easier for both private and business users to communicate faster and to structure their messages very clearly. But what if the Outlook search function suddenly stops working? What problems may occur when there are no matches found? How can they be eliminated?
  Sometimes Outlook can become overwhelmed with the amount of saved e-mails and information it contains. If this is happening when you use the Outlook search function, it often won't work. What sometimes helps is to narrow down your search terms. For example, if you use several e-mail accounts on Outlook, you should select the relevant user account before searching.
  A PST file ("PST" stands for "personal store") is used by Outlook to store all personal elements that a user may have. In addition to e-mails, this also includes appointments, contacts, or notes. The program manages and saves all data in the PST file like a virtual filing cabinet. Outlook requires at least one PST file, but can easily separate several of these files. For example, if the user distinguishes between private and business e-mails, Outlook creates two different PST files in its index.
  Every Microsoft Windows PC has a registry. It saves all data on the existing operating system and the programs installed on it. The individual programs know how to react to commands thanks to the registry. It also includes instructions for programs to start automatically when you boot your PC. The registry also contains notes for recently-opened files within a program. The next time you start the program, you can access it again.