File Extension Database

Open CAT File

In the world of digital files, various file extensions serve specific purposes. One such file extension is the CAT file, which can be associated with multiple applications, and can be opened and used in different ways. In this article, we will discuss the possible formats and ways to open and use files with a CAT file extension, as well as provide relevant websites for further information.

Microsoft Security Catalog

CAT files are commonly associated with Microsoft Security Catalog files. Catering to the Windows operating system, these files contain digital signatures for system files and device drivers. By storing these signatures, CAT files enable the operating system to verify the authenticity and integrity of these crucial files. Security Catalog files are created using Microsoft's SignTool, a command-line tool that digitally signs files, verifies signatures, and timestamps them, enhancing system security. For more details on SignTool, you can refer to the official Microsoft documentation.

Opening Microsoft Security Catalog Files

Microsoft Security Catalog files can be opened and viewed using the Windows built-in Catalog Editor. This utility allows you to view the contents of a CAT file and its associated properties. To open a CAT file with Catalog Editor:

Right-click on the CAT file.
Select 'Open With' from the context menu.
Choose 'Catalog Editor' from the list of available applications.
If 'Catalog Editor' is not listed, click 'Choose another app', browse to the system32 folder, and select makecat.exe.

STK Satellite Ephemeris Data

In addition to Microsoft Security Catalog, CAT files may also refer to STK Satellite Ephemeris Data files, which are used by the Systems Tool Kit (STK) software. STK is a powerful application used for modeling, analyzing, and visualizing complex systems in space, aviation, and defense industries. Satellite Ephemeris Data files are essential in providing crucial satellite positioning, orbit information, and other relevant data. The official AGI website offers more information on the Systems Tool Kit software.

Opening STK Satellite Ephemeris Data Files

To open and use STK Satellite Ephemeris Data files, you will need the Systems Tool Kit (STK) software installed on your computer. Once the software is available, follow these steps:

Launch the STK application.
From the main menu, click 'File', then choose 'Open'.
Browse to the location of the CAT file, select it and click 'Open'.
The CAT file will be imported and displayed in the STK application.

CAT File Important Information

As mentioned earlier, CAT files can represent different types of data, depending on their associated applications. While their formats differ, it is important to understand the function and purpose of the specific CAT file with which you are working. Opening and using a CAT file should always be done with caution, ensuring that the correct software and context are in place. Remember to refer to the resources provided in this article for additional guidance on opening and using CAT files.

Typical CAT application file locations:

%SystemRoot%\system32\rundll32.exe cryptext.dll
C:\Windows\system32\rundll32.exe cryptext.dll,CryptExtOpenCAT %1

Typical CAT mime types:

CryptExtOpenCAT %1
application/vnd.ms-pki.seccat

Frequently associated Windows objects:

CATFile

How Can I Open CAT File on Windows

We researched and learned that the best way to open CAT file is to find a CAT file in question in Windows OS File Explorer and double click on it to launch the corresponding application.
If a CAT file is not opened in an application and you instead get a "Windows can't open a file" error message you should try looking for an application which can open the file in question.
If you know the application which can open CAT file then run it and see if there is a File->Open main menu option in the application.
If you don't know the application which function as CAT file opener then try to search online for "CAT viewer", "application to open CAT file" or "open CAT file" queries in the search engine you like.
Install the application you found and check if it can open CAT file

How Can I Open CAT File on Mac OS

We recommend to find a CAT file in question in Mac OS Finder and double click on it to launch the corresponding application.
If a CAT file is not opened in a Mac OS application and you instead get a "There is no application set to open the file" error message you can click on "Search App Store" in the error dialog and Mac OS will show you applications compatible with CAT file.
If you know the Mac OS application which can work as CAT file opener you can choose the "Choose Application..." option in the error box to associate the file extension and open CAT file in it.
If you don't know the application which can open CAT file then try to search for "CAT viewer", "application to open CAT file" or "read CAT file" queries in the online search engine you like.
Install the application you found and check if it can read CAT file

How Can I Open CAT File on Android

If you downloaded a CAT file on Android device you can open it by following steps below:

In the Android apps list on your Android device find "My Files" or "File manager" app and tap to start it.
Tap on "Downloads" folder inside the app.
You should see your downloaded CAT file in that folder.
Tap on the file. If Android device supports opening the file you downloaded it will open in the corresponding app.
If file does not open you can look for the corresponding app that can open the file by searching Android App Store for the "CAT".
If you cannot open the file with the apps from Android App Store it is possible that the file could only be opened on desktop platforms such as Windows or Mac OS. Try searching for "CAT viewer", "CAT file reader" online and see if any desktop applications can open it.
It is also possible that the file you downloaded is outdated and is no longer supported.

How to Open CAT File on iPhone or iPad

To open CAT File on iOS device follow steps below:

We advies to open Files app on your iPhone or iPad device. You can find it by swiping down on the home screen and typing "Files" in the search bar.
Tap on the Downloads folder on the Files app home screen.
You will see all files that you recently downloaded. Tap on the CAT file to view it.
If you have the right app that can open it it will automatically launch and open your file.
If you don't have the app which can open it you need to serch Apple app store for "CAT". This way you can find apps which can open CAT files.
If this doesn't help it is possible that your file could be opened only by the desktop application. To find an app which can open it on desktop look for "CAT viewer" or "CAT file" online in your favorite search engine.

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