If you have installed on your computer antivirus program Can scan all files on your computer, as well as each file individually. You can scan any file by clicking right click mouse on the file and selecting the appropriate option to scan the file for viruses.

For example, in this figure it is highlighted file my-file.pst, then you need to right-click on this file and select the option in the file menu "scan from using AVG» . When choosing this parameter will open AVG Antivirus, which will perform the check of this file for the presence of viruses.

Sometimes an error may occur as a result incorrect installation software , which may be due to a problem encountered during the installation process. This may interfere with your operating system link your PST file to the correct application software , influencing the so-called "file extension associations".

Sometimes simple reinstalling Microsoft Outlook Express can solve your problem by linking PST with Microsoft Outlook Express correctly. In other cases, problems with file associations may result from bad software programming developer and you may need to contact the developer to obtain additional help.

Advice: Try updating Microsoft Outlook Express to latest version to make sure you have the latest patches and updates installed.

This may seem too obvious, but often The PST file itself may be causing the problem. If you received the file via an attachment Email or downloaded it from a website and the download process was interrupted (for example, a power outage or other reason), the file may become damaged. If possible, try getting a new copy of the PST file and try opening it again.

Carefully: A damaged file may cause collateral damage to a previous or existing malware on your PC, so it is very important to keep an updated antivirus running on your computer at all times.

If your PST file related to the hardware on your computer to open the file you may need update device drivers associated with this equipment.

This problem usually associated with media file types, which depend on successfully opening the hardware inside the computer, e.g. sound card or video cards. For example, if you are trying to open an audio file but cannot open it, you may need to update sound card drivers.

Advice: If when you try to open a PST file you receive .SYS file error message, the problem could probably be associated with damaged or outdated drivers devices that need to be updated. This process can be made easier by using driver update software such as DriverDoc.

If the steps do not solve the problem and you are still having problems opening PST files, this may be due to lack of available system resources . Some versions of PST files may require a significant amount of resources (e.g. memory/RAM, processing power) to properly open on your computer. This problem occurs quite often if you are using a fairly old computer. Hardware and at the same time a much newer operating system.

This problem can occur when the computer is having trouble keeping up with a task because the operating system (and other services running in the background) may consume too many resources to open PST file. Try closing all applications on your PC before opening Outlook Personal Information Store File. By freeing up all available resources on your computer you will be in the best position to attempt to open your PST file.

If you completed all the steps described above and your PST file still won't open, you may need to run equipment update. In most cases, even when using older versions of hardware, the processing power can still be more than sufficient for most user applications (unless you're doing a lot of CPU-intensive work, such as 3D rendering, financial/scientific modeling, or intensive multimedia work) . Thus, it is likely that your computer does not have enough memory(more commonly called "RAM", or RAM) to perform the file open task.

You"re here because you have a file that has a file extension ending in .pst. Files with the file extension .pst can only be launched by certain applications. It"s possible that .pst files are data files rather than documents or media , which means they"re not meant to be viewed at all.

what is a .pst file?

Files in the PST format are data files created by Microsoft Outlook, a personal information manager and a part of the Microsoft Office Suite. Outlook is most often used as an email application; it also features other elements such as the contact manager, task manager, note taking, a journal and a calendar. The program can also work with Microsoft’s Exchange Server where multiple users may share mailboxes and calendars, exchange files and schedule meetings. PRF files are user profile files which contain information on the user such as signatures and references to mail folders, and other user preferences like mail account settings. Using Microsoft's Office Resource Kit, PRF files can be created and the set out to multiple systems. PST files are used to hold personal information used by Microsoft Outlook and Exchange. This information may include contacts, addresses, email folders and other data. Such files have a 2GB limit and will slow down the program if files are close to the limit.

how to open a .pst file?

Launch a .pst file, or any other file on your PC, by double-clicking it. If your file associations are set up correctly, the application that"s meant to open your .pst file will open it. It"s possible you may need to download or purchase the correct application. It"s also possible that you have the correct application on your PC, but .pst files aren"t yet associated with it. In this case, when you try to open a .pst file, you can tell Windows which application is the correct one for that file. From then on, opening a .pst file will open the correct application.

applications that open a .pst file

Microsoft Outlook Express

Microsoft Outlook Express

Outlook Express is an email and news client that is integrated with Internet Explorer versions 4.0 through 6.0. It is also bundled with a number of versions of Microsoft Windows, from Windows 98 to Windows Server 2003, and is available for Windows 3.x, Windows NT 3.51, Windows 95 and Mac OS 9. In Windows Vista, Outlook Express was outdated by Windows Mail, then again by Windows Live Mail as separate software in Windows 7. Microsoft Entourage, sold as part of Microsoft Office for Macintosh, has changed the Macintosh version. Outlook Express is a diverse application from Microsoft Office Outlook. The two programs do not share a common codebase, but do share a common architectural philosophy. The similar names lead many people to incorrectly conclude that Outlook Express is a stripped-down version of Microsoft Office Outlook. Outlook Express utilizes the Windows Address Book to store contact information and incorporates tightly with it. On Windows XP, it also joins together with Windows Messenger.

Microsoft Office Outlook

Microsoft Office Outlook

Microsoft Outlook is available as a part of the Microsoft Office suite, and a personal information manager from Microsoft. The present version is Microsoft Office Outlook 2010 for Windows and Microsoft Office Outlook 2011 for Mac. Although frequently used primarily as an email application, it also includes a calendar, task manager, contact manager, note taking, a journal and Web browsing. It can be utilized as a stand-alone application, or can work with Microsoft Exchange Server and Microsoft SharePoint Server for many users in an organization, such as shared mailboxes and calendars, exchange public folders, SharePoint lists and meeting schedules. There are third-party add-on applications that integrate Outlook with electronic devices such as BlackBerry mobile phones and with other software like Office & Skype Internet communication. Developers can also make their own conventional software that works with Outlook and Office components using Microsoft Visual Studio. Moreover, Windows Mobile devices can synchronize almost all Outlook data to Outlook Mobile.

a word of warning

Be careful not to rename the extension on .pst files, or any other files. This will not change the file type. Only special conversion software can change a file from one file type to another.

Outlook is part of your daily routine. Used to send email messages, set up calendar events, and create tasks and other items. But is it possible to find out how and where all the elements are stored? For Office 365, Exchange and Outlook.com accounts, all information is stored on the server, but an offline copy is also stored on local computer to an Outlook offline data file (OST).

For POP and IMAP accounts, you can save Outlook items to an Outlook data (.pst) file. If you need to open or close an Outlook data file (.pst), you can do so in a few simple steps.

note A: If your organization has a policy in place where email messages are automatically archived, old email messages, calendar events, and tasks can be archived in an Outlook data file (.pst). Even if your account uses an Outlook Offline Data File (OST) for all of its day-to-day data, you could still have an archive.pst file containing old data.

It is very important to remember your password because it will not be possible to recover it from Microsoft. All recorded passwords should be stored in a secure place away from the information they are intended to protect.

Important: Neither Microsoft, your ISP, nor your email administrator has access to your password and will not be able to help you recover the contents of your PST file if you forget it.

Press the button three times OK .

When you click the account folder, you will be prompted to enter a password. Once you gain access, you will not have to enter your password again during that session. If you close and restart Outlook, you will be prompted for a password when you select a folder.

Important: The PST file password is not designed to protect against hackers. It simply prevents other people you share the computer with, such as family members, from viewing the file. To more reliably protect data on a computer used by several people, you need to create account Windows password protected for each user.

Archive of sent mail for December 2007

Removing a PST file from the navigation pane

You may want to remove unnecessary folders from the navigation pane since you don't need to access the PST file frequently. You can hide an Outlook data file from the Navigation Pane without deleting it from your computer.

Right-click the Personal Folders file you want to remove from the Navigation Pane and click Close personal folders.

If Close personal folders option is not available, you are most likely trying to delete the PST file that Outlook uses to save new messages. If you delete this data file, new messages will not be sent anywhere.

Advice: Are you afraid of deleting a file and losing data? Closing a PST file does not delete the file itself or the items it contains; the file simply stops being displayed in the navigation area. You can display the PST file again at any time:

On the menu file select item Open and select Outlook Data File.

Click the PST file you want to open and click OK.

Hello everyone, earlier I mentioned in my article about how to restore an Outlook 2010 archive folder in the program interface. Today there will be instructions on how to connect an archive file with the pst extension; this data file stores information about incoming or outgoing letters, depending on what was saved to this file. Over a long period of work Mailbox on the computer increased to a critical size, a situation also developed that the archive of letters also exceeded the permissible size, as a result of which it was decided to create a new archive file with the pst extension but with a different name. But how can I make sure that two archives (data files with the pst extension) are in the program and that I can read archived emails from several archives?

So, if we click on the file menu item, in my case the mailbox is full and archiving is required.

Click the Archive button, only in the Archive File line:

We write a new file name - arbitrarily, for me it is archive22.pst, I also set the archiving of elements until a certain date - Monday February 29, 2016 - all letters that were created before this date will be archived.

Now, to connect two archive files in Outlook, go to File – Open and Export tab – Open Outlook data file (.pst)
When you select this item, a dialog box appears with the choice of the included file, let’s say the newly created archive file is called archive22.pst, and the old backup.pst - which means we need to select backup.pst
so that the letters stored in this data file are loaded into the program. After selecting a file mail program Outlook takes some time to download all the files from the archive. As a result, we get two archive folders on the left in the navigation panel: These are Archive folders - newly created archive (Archive22.pst), Archives (backup.pst)

If mail has been accumulating for a long time, then you can similarly archive incoming and outgoing correspondence by year (for example, 2014,2015,2016) and create 2014.pst files, etc. Connect archives to the program using the above method and rename the names by right-clicking on the folder name - then data file properties

In the “Folder Options” information window, click the additional button:

In the General tab, change the name to the required one, for example, to the year of stored archived letters, for example 2014

By splitting the archives into several files, we managed to reduce the main database of letters, and also split the archive into several files. We created a catalog by year of storage of letters. And we got rid of the long loading time of the program when it starts.

In any unclear situation with the operating room Windows system- most easy way this is a reinstallation operating system. However, if you have little experience or have never reinstalled such programs, then it is better to turn to professionals. This will reduce the time it takes to restore your computer to working order and save your nerves and finances; every city has service centers those who have been providing these services for several years, for example, installing Windows in Zhitomir is carried out in the shortest possible time, quickly, efficiently, and most importantly, reliably and professionally.