MO File Extension

What is MO file?

MO is a developer file used for storing machine code (binary). MO files are not human-readable. Modifying a MO file will render it unusable. Given MO file may only be used by the application which generated the file.

Data access

MO files are not encrypted or read-protected. Some text editors allow users to access the original data form such files. The practice of accessing MO application code is typically used for reconstructing older or obsolete applications and as a part of reverse engineering processes.

Programs which support MO file extension

The list that follows enumerates programs compatible with MO files, divided into 3 categories based on operating system on which they are available. MO files can be encountered on all system platforms, including mobile, yet there is no guarantee each will properly support such files.

Updated: 02/25/2022

How to open file with MO extension?

There can be multiple causes why you have problems with opening MO files on given system. On the bright side, the most encountered issues pertaining to Machine Object Format 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. Install GNU gettext software

The most common reason for such problems is the lack of proper applications that supports MO files installed on the system. The solution to this problem is very simple. Download GNU gettext and install it on your device. On the top of the page a list that contains all programs grouped based on operating systems supported can be found. The safest method of downloading GNU gettext installed is by going to developer’s website (Free Software Foundation, Inc.) and downloading the software using provided links.

Step 2. Check the version of GNU gettext and update if needed

If the problems with opening MO files still occur even after installing GNU gettext, it is possible that you have an outdated version of the software. Check the developer’s website whether a newer version of GNU gettext is available. Sometimes software developers introduce new formats in place of that already supports along with newer versions of their applications. If you have an older version of GNU gettext installed, it may not support MO format. All of the file formats that were handled just fine by the previous versions of given program should be also possible to open using GNU gettext.

Step 3. Assign GNU gettext to MO files

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

Selecting the first-choice application in Windows

• Choose the Open with entry from the file menu accessed by right-mouse clicking on the MO file
• Next, select the Choose another app option and then using More apps open the list of available applications
• Finally select Look for another app on this PC, point to the folder where GNU gettext is installed, check the Always use this app to open MO files box and conform your selection by clicking OK button

Selecting the first-choice application in Mac OS

• Right-click the MO file and select Information
• Proceed to the Open with section. If its closed, click the title to access available options
• Select the appropriate software and save your settings by clicking Change all
• A message window should appear informing that This change will be applied to all files with MO extension. By clicking Continue you confirm your selection.

Step 4. Verify that the MO is not faulty

Should the problem still occur after following steps 1-3, check if the MO file is valid. Problems with opening the file may arise due to various reasons.

1. Verify that the MO in question is not infected with a computer virus

If the MO is indeed infected, it is possible that the malware is blocking it from opening. It is advised to scan the system for viruses and malware as soon as possible or use an online antivirus scanner. If the scanner detected that the MO file is unsafe, proceed as instructed by the antivirus program to neutralize the threat.

2. Check whether the file is corrupted or damaged

Did you receive the MO file in question from a different person? Ask him/her to send it one more time. During the copy process of the file errors may occurred rendering the file incomplete or corrupted. This could be the source of encountered problems with the file. It could happen the the download process of file with MO extension was interrupted and the file data is defective. Download the file again from the same source.

3. Verify whether your account has administrative 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. Check whether your system can handle GNU gettext

If the system is under havy load, it may not be able to handle the program that you use to open files with MO 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 Machine Object Format files. Outdated drivers or software may have caused the inability to use a peripheral device needed to handle MO files.

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