.0 File Extension

.0 File Extension

File Type 2

Hacha Split Archive File

Developer Dr. Software
Popularity
3.5  |  271 Votes
Category Compressed Files
Format N/A

What is a 0 file?

First part of a split archive created with Hacha, a file archive splitting utility; supports various types of file compression and adds a number the end of each filename; i.e. "archive.zip.0," "archive.zip.1," "archive.zip.2," etc.

More Information

Hacha is written in the Spanish language (Hacha means "Axe" in English).

Programs that open 0 files

Windows
Dr. Software Hacha or Hacha Pro
Updated February 11, 2008
File Type 3

M3 DS Real Save File

Developer M3
Popularity
3.4  |  177 Votes
Category Game Files
Format N/A

What is a 0 file?

File saved by the M3 DS Real, a multipurpose game cartridge for the Nintendo DS; can store games, movies, and music that can be played on the NDS; automatically created when a game is loaded from the M3 DS Real for the first time; can also be saved manually like a regular game cartridge.

More Information

Data can be transferred to an M3 DS Real cartridge by connecting the cartridge to a PC via USB and dragging files to it like a hard drive or flash memory device.

Programs that open 0 files

Windows
Transfer to an M3 DS cartridge
Not meant to be opened on a PC
Updated February 25, 2008
File Type 4

Incomplete Mario Kart Wii Course

Developer Nintendo
Popularity
3.5  |  10 Votes
Category Game Files
Format XML

What is a 0 file?

Course.0 is an incomplete Mario Kart Wii level file that was mistakenly included in the final version of the game. It contains an uncompressed prototype of the Bowser's Castle course included in Mario Kart Wii. Course.0 is not playable within Mario Kart Wii, as it is not saved in the compressed .KMP format Mario Kart Wii uses to load courses.

More Information

Intrepid Mario Kart Wii modders found course.0 within the game's koopa_course.szs file. This unusual file was saved in a format not used by any of Mario Kart Wii's other files. The modders soon discovered that the file included an early version of the game's Bowser's Castle racetrack, which had been created in 2007 and not deleted before Mario Kart Wii shipped in 2008.

Modders analyzed course.0 to further their knowledge of how Mario Kart Wii racetracks are developed and created. Some even attempted to convert course.0 into a usable Mario Kart Wii course.

How to open a 0 file

Because course.0 is an incomplete Mario Kart Wii course that is not saved in the KMP file format, it cannot be opened or played in Mario Kart Wii. You can, however, open course.0 in a text editor to view the XML data it contains.

Programs that open 0 files

Windows
Included with OS
Mac
Included with OS
Linux
Updated November 19, 2020
File Type 5

Android CA Digital Certificate

Developer N/A
Popularity
3.0  |  2 Votes
Category System Files
Format N/A

What is a 0 file?

A 0 file is an Android digital certificate. It contains credentials used to verify a website, network, or application's identity and authenticity. You can install 0 files at the user level on any Android device, but you can install 0 files at the system level on only rooted Android devices.

More Information

Devices, networks, websites, and applications use digital certificates, issued by certificate authorities (CAs), to identify themselves to each other and confirm you are transmitting information between trusted parties. Sometimes, websites, networks, and applications will require you to download and manually install a digital certificate, so you can securely exchange information.

On Android, some digital certificates are saved as 0 files (others are saved as .CRT, .P12, or .PFX files). 0 files can be installed at the user level or the system level, which determines whether all Android apps trust the certificate by default. However, to install a 0 file at the system level, you must possess a rooted Android device and manually move the 0 file to your device's system/​etc/​security/​cacerts directory. In most cases, you can simply install 0 files at the user level, and the apps that require that certificate will function correctly.

How to open a 0 file

To install a 0 file at the user level on Android:

  1. Place the 0 file on your Android device's SD card.
  2. Open your device's Settings app and select Security → Encryption & Credentials.
  3. Select Install from storage.
  4. Select CA Certificate.
  5. Click through the warning message Android displays.
  6. Navigate to and select your 0 file.

Android's certificate manager will open, allowing you to install your certificate.

After you install a 0 file, Android will automatically delete the file from its current location and place it in the data/​misc/​user/​0/​cacerts-added directory.

Programs that open or reference 0 files

Android
Included with OS
Updated July 30, 2021

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