VSTO File Extension

What is VSTO file?

Full format name of files that use VSTO extension is Microsoft Visual Studio. Microsoft Visual Studio format was developed by Microsoft Corporation. VSTO files are supported by software applications available for devices running Windows. VSTO file format, along with 6033 other file formats, belongs to the Misc Files category. The most popular software that supports VSTO files is Microsoft Visual Studio. On the official website of Microsoft Corporation developer not only will you find detailed information about theMicrosoft Visual Studio software, but also about VSTO and other supported file formats.

Programs which support VSTO file extension

The following listing features VSTO-compatible programs. Files with VSTO suffix can be copied to any mobile device or system platform, but it may not be possible to open them properly on target system.

How to open file with VSTO extension?

There can be multiple causes why you have problems with opening VSTO files on given system. On the bright side, the most encountered issues pertaining to Microsoft Visual Studio files aren’t complex. In most cases they can be addressed swiftly and effectively without assistance from a specialist. The list below will guide you through the process of addressing the encountered problem.

Step 1. Download and install Microsoft Visual Studio

The main and most frequent cause precluding users form opening VSTO files is that no program that can handle VSTO files is installed on user’s system. The solution to this problem is very simple. Download Microsoft Visual Studio and install it on your device. 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 Visual Studio website and download the installer.

Step 2. Verify the you have the latest version of Microsoft Visual Studio

If the problems with opening VSTO files still occur even after installing Microsoft Visual Studio, it is possible that you have an outdated version of the software. Check the developer’s website whether a newer version of Microsoft Visual Studio is available. It may also happen that software creators by updating their applications add compatibility with other, newer file formats. The reason that Microsoft Visual Studio cannot handle files with VSTO may be that the software is outdated. The latest version of Microsoft Visual Studio should support all file formats that where compatible with older versions of the software.

Step 3. Set the default application to open VSTO files to Microsoft Visual Studio

After installing Microsoft Visual Studio (the most recent version) make sure that it is set as the default application to open VSTO files. The process of associating file formats with default application may differ in details depending on platform, but the basic procedure is very similar.

The procedure to change the default program in Windows

• Choose the Open with entry from the file menu accessed by right-mouse clicking on the VSTO file
• Select Choose another app → More apps
• To finalize the process, select Look for another app on this PC entry and using the file explorer select the Microsoft Visual Studio installation folder. Confirm by checking Always use this app to open VSTO files box and clicking OK button.

The procedure to change the default program in Mac OS

• From the drop-down menu, accessed by clicking the file with VSTO extension, select Information
• Find the Open with option – click the title if its hidden
• From the list choose the appropriate program and confirm by clicking Change for all....
• Finally, a This change will be applied to all files with VSTO extension message should pop-up. Click Continue button in order to confirm your choice.

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

You closely followed the steps listed in points 1-3, but the problem is still present? You should check whether the file is a proper VSTO file. Being unable to access the file can be related to various issues.

1. Check the VSTO file for viruses or malware

Should it happed that the VSTO is infected with a virus, this may be that cause that prevents you from accessing it. Scan the VSTO file as well as your computer for malware or viruses. VSTO file is infected with malware? Follow the steps suggested by your antivirus software.

2. Ensure the file with VSTO extension is complete and error-free

If you obtained the problematic VSTO file from a third party, ask them to supply you with another copy. 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 VSTO extension was interrupted and the file data is defective. Download the file again from the same source.

3. Ensure that you have appropriate access rights

Sometimes in order to access files user need to have administrative privileges. Log in using an administrative account and see If this solves the problem.

4. Verify that your device fulfills the requirements to be able to open Microsoft Visual Studio

If the system is under havy load, it may not be able to handle the program that you use to open files with VSTO extension. In this case close the other applications.

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

Regularly updated system, drivers, and programs keep your computer secure. This may also prevent problems with Microsoft Visual Studio files. It is possible that one of the available system or driver updates may solve the problems with VSTO files affecting older versions of given software.

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