What is the VSTO File Extension?

Writer:   |   Updated: December 05, 2018

Microsoft Silver

VSTO File Summary

File Extension VSTO has only one distinct file type (Microsoft Visual Studio Data format) and is mostly associated with a single related software program from Microsoft Corporation (Microsoft Visual Studio). VSTO files are traditionally categorized as Data Files.

Both desktop and mobile devices enable you to view and (sometimes) edit these files, depending on the software used. The VSTO File Extension carries a Popularity Rating of "Low", meaning that these files are scarcely found in most user's file stores.

If you are having problems opening VSTO files, or would simply like to learn more about the software programs and developers that are associated with them, please see the complete information contained below.

Low
Universality
8138
Rank

/ 11690

Active

Mode

5

December

2018

Refreshed

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VSTO Types


Principal VSTO Type

.VSTO
File Name:.vsto
Group:Microsoft Visual Studio Data

The file extension is related to the Microsoft Visual Studio, an IDE (integrated development environment) that allows developers to design programs as well as web apps. These files contain some type of data used by the Visual Studio.

Developer: Microsoft Corporation
Group:Data Files
Folder: HKEY_CLASSES_ROOT\.vsto

Software Programs That Open The Microsoft Visual Studio Data:


Microsoft Visual Studio by Microsoft Corporation

Windows

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VSTO Requests


Primary OS Ranking

WindowsMacintoshLinuxChromeOtherWindows: 97%Macintosh: 2%Linux: 1%Chrome: 0%Other: 0%
Windows (97.14%)
Macintosh (2.06%)
Linux (0.73%)
Chrome (0.05%)
Other (0.01%)


Understanding VSTO Issues


Typical VSTO Opening Challenges

Microsoft Visual Studio Not Present

You encounter an error message such as "- Can't Open VSTO Files" when trying to open your VSTO. If so, it typically means that you don't have Microsoft Visual Studio installed for - . The typical path of opening your VSTO with a double-click won't work because - cannot make the program connection.


Tip: When you have another program installed that you know will open your VSTO, you can select it from the other programs listed (see "Show Apps").


Wrong Version of Microsoft Visual Studio is Installed

In some cases, you might have a newer (or older) version of a Microsoft Visual Studio Data file that is unsupported by your installed application version. Visit the Microsoft Corporation website to download (or purchase) the latest version of Microsoft Visual Studio. Most of the time your Microsoft Visual Studio Data file was created by a newer Microsoft Visual Studio than what you have installed.


Tip: You can sometimes get hints about the right program version by right-clicking on the VSTO file, selecting "Properties", and looking at the version information.


Primarily, problems experienced when opening VSTO files are due to having the incorrect version of Microsoft Visual Studio installed on your computer.


More Causes of Problems Opening VSTOs

Errors opening Microsoft Visual Studio Data files can still occur even with the latest Microsoft Visual Studio software installed on your computer. If you are still having problems opening VSTO files, there may be other issues that are preventing you from opening these files. Problems unrelated to software:

  • Invalid VSTO file references in the Windows Registry (the "phonebook" of the Windows Operating System)
  • Unintentional removal of the description of the VSTO file inside the Windows Registry
  • Invalid installation of a VSTO-associated program (eg. Microsoft Visual Studio)
  • File corruption affecting your VSTO file
  • Your VSTO has adversely impacted by malware
  • Device drivers for VSTO-related hardware are out-of-date
  • Windows cannot load your Microsoft Visual Studio Data file due to insufficient resources (eg. RAM)

Quiz: What file extension is an audio file?








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