1. STO File Extension
2. What is a(n) STO file?
3. How to open STO file?

3.1 Download and install application that supports STO files
1. 3.1.1 Programs that support STO files
3.2 Verify whether STO files are associated with appropriate software
3.3 Check STO file for other errors

4. Similar file extensions

STO File Extension

File type PRO100 3D Interior Design Project
File developer Ecru Software
File category 3D Image Files
File popularity rating

What is a(n) STO file?

The STO (PRO100 3D Interior Design Project) file format is a proprietary 3D design format used by the PRO100 software. It stores 3D models, textures, and information about the scene, such as lighting and camera views. These files are used to create realistic virtual interiors for comprehensive interior design projects.

STO files can be exported in a variety of other formats such as DWG, DXF and PDF. The files are mainly used to visualize interior design projects in 3D. This file format is part of the PRO100 software, which allows users to create professional 3D interior designs with complete accuracy and precision.

How to open STO file?

If given user account does not have necessary permissions to open files with STO extension, it is highly probable that no program that supports given files is installed on the users’ system. Below is a list of actions user should pursue in order to resolve most common problems.

Step 1. Download and install application that supports STO files

After the application has been installed, the system should automatically open STO files with given application. Below is the list of relevant programs along with operating systems they are available for:

Programs that support STO files

Windows

PRO100

Step 2. Verify whether STO files are associated with appropriate software

It is possible that an application that supports STO files is not associated with such files. In such case, the program should by manually associated with STO files (right-click on the file icon → Properties → General Tab → In submenu "Open with" and click on "Change" button. System will display a list of suggested programs that support STO files. Choose the application by checking the box "Always use the selected application to open this kind of files". System will store this information in its registry and use it to open STO files with the selected program.

Changing STO file association in registry

File association for STO files can be edited manually by editing appropriate entry in Windows System Registry. However, it is discouraged as it may introduce errors to registry if not done properly and may even damage the system.

Step 3. Check STO file for other errors

STO file was not copied properly from storage medium.
Antivirus application prevents opening STO files. In that case it is recommended to exercise extreme caution and recover or delete infected STO file. It is also advised to scan the entire system for malicious software and viruses with antivirus software.
For STO files downloaded from the internet it is advised to check if the file has been downloaded completely and is not corrupted. If not, the file should be re-downloaded.

Similar file extensions

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