XST File Extension

What is XST file?

XST is a file extension commonly associated with Microsoft Outlook Personal Folders Format files. Microsoft defined the Microsoft Outlook Personal Folders Format format standard. Files with XST extension may be used by programs distributed for Windows platform. XST file belongs to the Settings Files category just like 1305 other filename extensions listed in our database. Microsoft Outlook supports XST files and is the most frequently used program to handle such files, yet 3 other tools may also be used. Microsoft Outlook software was developed by Microsoft Corporation, and on its official website you may find more information about XST files or the Microsoft Outlook software program.

Programs which support XST file extension

The following listing features XST-compatible programs. Files with XST extension, just like any other file formats, can be found on any operating system. The files in question may be transferred to other devices, be it mobile or stationary, yet not all systems may be capable of properly handling such files.

How to open file with XST extension?

Problems with accessing XST may be due to various reasons. What is important, all common issues related to files with XST extension can be resolved by the users themselves. The process is quick and doesn’t involve an IT expert. The following is a list of guidelines that will help you identify and solve file-related problems.

Step 1. Download and install Microsoft Outlook

Problems with opening and working with XST files are most probably having to do with no proper software compatible with XST files being present on your machine. This issue can be addressed by downloading and installing Microsoft Outlook or different compatible program, such as Microsoft Office, Microsoft Exchange Server, Office 365. The full list of programs grouped by operating systems can be found above. One of the most risk-free method of downloading software is using links provided by official distributors. Visit Microsoft Outlook website and download the installer.

Step 2. Update Microsoft Outlook to the latest version

If you already have Microsoft Outlook installed on your systems and XST files are still not opened properly, check if you have the latest version of the software. It may also happen that software creators by updating their applications add compatibility with other, newer file formats. If you have an older version of Microsoft Outlook installed, it may not support XST format. The latest version of Microsoft Outlook should support all file formats that where compatible with older versions of the software.

Step 3. Assign Microsoft Outlook to XST files

If the issue has not been solved in the previous step, you should associate XST files with latest version of Microsoft Outlook you have installed on your device. The process of associating file formats with default application may differ in details depending on platform, but the basic procedure is very similar.

Selecting the first-choice application in Windows

• Clicking the XST with right mouse button will bring a menu from which you should select the Open with option
• Next, select the Choose another app option and then using More apps open the list of available applications
• Finally select Look for another app on this PC, point to the folder where Microsoft Outlook is installed, check the Always use this app to open XST files box and conform your selection by clicking OK button

Selecting the first-choice application in Mac OS

• By clicking right mouse button on the selected XST file open the file menu and choose Information
• Proceed to the Open with section. If its closed, click the title to access available options
• Select Microsoft Outlook and click Change for all...
• Finally, a This change will be applied to all files with XST extension message should pop-up. Click Continue button in order to confirm your choice.

Step 4. Ensure that the XST file is complete and free of errors

If you followed the instructions form the previous steps yet the issue is still not solved, you should verify the XST file in question. Being unable to access the file can be related to various issues.

1. Verify that the XST in question is not infected with a computer virus

Should it happed that the XST is infected with a virus, this may be that cause that prevents you from accessing it. It is advised to scan the system for viruses and malware as soon as possible or use an online antivirus scanner. XST file is infected with malware? Follow the steps suggested by your antivirus software.

2. Check whether the file is corrupted or damaged

Did you receive the XST file in question from a different person? Ask him/her to send it one more time. It is possible that the file has not been properly copied to a data storage and is incomplete and therefore cannot be opened. It could happen the the download process of file with XST extension was interrupted and the file data is defective. Download the file again from the same source.

3. Check if the user that you are logged as has administrative privileges.

Some files require elevated access rights to open them. Log out of your current account and log in to an account with sufficient access privileges. Then open the Microsoft Outlook Personal Folders Format file.

4. Check whether your system can handle Microsoft Outlook

If the systems has insufficient resources to open XST files, try closing all currently running applications and try again.

5. Check if you have the latest updates to the operating system and drivers

Up-to-date system and drivers not only makes your computer more secure, but also may solve problems with Microsoft Outlook Personal Folders Format file. It is possible that one of the available system or driver updates may solve the problems with XST files affecting older versions of given software.

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