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What is the STP File Extension?

Author:   |   Revised: November 26, 2018

Microsoft Silver

STP File Summary

The STP File Extension has ten different file types (mostly seen as the STEP 3D CAD File format) and can be opened with sixteen distinctive software programs, with the dominant related application developed by Dassault Systèmes (CATIA software). Although STP files are traditionally categorized as 3D Image Files, they can also be Settings Files or Data Files.

The STP File Extension can be viewed on the Windows, Unix, and Mac operating systems. They are supported on both desktop and mobile devices. The STP File Extension carries a Popularity Rating of "Low", meaning that these files are scarcely found in most user's file stores.

To learn more about STP files and their associated software applications, please see the information below. Plus, we provide a basic troubleshooting guide to solve problems with opening STP files.

Low
Popularity
527
Standing

/ 11690

Active

Importance

26

November

2018

Page Last Updated

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Kinds of STP Files

  10 known file types use this extension

Dominant STP File Type

.STP
File ID:.stp
Class:STEP 3D CAD File

The most common association with the STP file extension is with STEP, an ISO standard for the representation and exchange of industrial product data. STP files contain 3D object data and are saved in a text-based ASCII format that complies with the STEP Application Protocols ISO 10303-2xx. At times, STP files may also use the less common .STEP file extension.

Organization: Unknown Developer
Division:3D Image Files
Folder: HKEY_CLASSES_ROOT\.stp

Software Programs That Open The STEP 3D CAD File:


CATIA by Dassault Systèmes

Windows
Unix

Autodesk Fusion 360 by Autodesk, Inc.

Windows
Windows Phone
Mac
iOS
Android
Web

FreeCAD by Open Source

Windows
Mac
Linux

CADSoftTools ABViewer by CADSoftTools

Windows

STP Viewer by ideaMK

Windows

IDA-STEP by LKSoft

Windows
Linux

ShareCAD by CADSoftTools

Windows
Windows Phone
Mac
iOS
Android
Web
OS X El Capitan

Additional STP Files

.STP
File ID:.stp
Class:DART Pro 98 System Settings File
.STP
File ID:.stp
Class:RoboHelp Stop List File
.STP
File ID:.stp
Class:Microsoft SharePoint Services Template
.STP
File ID:.stp
Class:Analysis Studio Project Information File
.STP
File ID:.stp
Class:FScruiser Setup File
.STP
File ID:.stp
Class:NASCAR Racing Track Picture
.STP
File ID:.stp
Class:SYSTRAN Translation Project Manager Project File
.STP
File ID:.stp
Class:WSxM SPM Processed Data File
.STP
File ID:.stp
Class:Microsoft HTML Help Stop Words Data File

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STP Demand


Popular OSes

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%)

Operating System Rankings

WindowsAndroidiOSMacintoshLinuxWindows: 83%Android: 12%iOS: 3%Macintosh: 2%Linux: 1%
Windows (82.33%)
Android (11.56%)
iOS (3.43%)
Macintosh (1.71%)
Linux (0.60%)


Understanding STP Issues


Frequent STP Opening Issues

CATIA Disappeared

Double-clicking your STP file prompts the message "- Can't Open STP File". Usually, this is because you do not have CATIA for - installed. Your operating system cannot associate your STP with CATIA, so double-clicking the file won't work.


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


Incorrect CATIA Version

In other instances, your STEP 3D CAD File file version may not be supported by your version of CATIA. Visit the Dassault Systèmes website to download (or purchase) the latest version of CATIA. This issue mainly occurs when your STEP 3D CAD File file was created by a newer version of CATIA than you have on your PC.


Tip: If you right-click on your STP file, then select "Properties" (Windows) or "Get Info" (Mac), you can obtain hints about what version you need.


Summary: Not having the right CATIA version on your computer can cause problems opening STP files.


Other Causes of STP File Opening Problems

In the majority of cases, installing the right version of CATIA will resolve your issue. Other STP opening errors can be created by other system problems inside of - . Additional factors include:

  • Corrupt Windows Registry file path references for STP
  • Deletion of the STP file description from the Registry by mistake
  • Invalid installation of a STP-associated program (eg. CATIA)
  • Your STP can't be loaded properly (file corruption)
  • STP file integrity has been compromised by malware
  • Hardware associated with STP has outdated drivers
  • Windows has inadequate resources to open your STEP 3D CAD File file

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How to Fix Problems Opening STP Files

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