Software & AppsOperating SystemLinux

How To Fix “missing” Error in Ubuntu 18.04

Ubuntu 12

In this article, we will guide you through the process of fixing the “missing” error in Ubuntu 18.04. This error is commonly encountered when trying to run certain applications that rely on the GTK+ graphical user interface toolkit. If you’ve stumbled upon this error, don’t worry. We’re here to help.

Quick Answer

To fix the "missing" error in Ubuntu 18.04, you can try reinstalling the libgtk2.0-0 package using the command "sudo apt-get install –reinstall libgtk2.0-0". If that doesn’t work, you can install the 32-bit version of the package using "sudo apt-get install libgtk2.0-0:i386".

Understanding the Error

Before we dive into the solution, it’s important to understand what the error message “missing” means. In Linux, applications often rely on libraries to perform certain functions. In this case, the application you’re trying to run needs the library, which is a part of the GTK+ 2.0 toolkit. If this library is missing, the application will not be able to start, resulting in the error message.

Solution 1: Reinstalling libgtk2.0-0

The first solution we’re going to try is reinstalling the libgtk2.0-0 package. This package contains the library that your application needs. To reinstall this package, open a terminal and run the following command:

sudo apt-get install --reinstall libgtk2.0-0

Here, sudo grants the command administrative privileges, apt-get is the package handling utility in Ubuntu, install is the command to install packages, --reinstall tells apt-get to reinstall the package, and libgtk2.0-0 is the name of the package.

Solution 2: Installing the 32-bit version of libgtk2.0-0

If the first solution didn’t work, it’s possible that you’re trying to run a 32-bit application on a 64-bit system. In this case, you’ll need to install the 32-bit version of the libgtk2.0-0 package. To do this, run the following command:

sudo apt-get install libgtk2.0-0:i386

Here, i386 specifies that the 32-bit version of the package should be installed.

Additional Troubleshooting

If neither of the above solutions work, you may need to seek alternative solutions. This could include searching for alternative sources or repositories that provide the required library. However, please be cautious when installing packages from unofficial sources, as they may pose security risks.

If you’re still unable to resolve the issue, it’s possible that the application may not be compatible with your system or there may be other underlying issues. In such cases, consider seeking further assistance from the application’s support or community forums.


In this article, we’ve covered two potential solutions to the “missing” error in Ubuntu 18.04. We hope that one of these solutions has resolved your issue. If not, don’t be discouraged. Linux is a complex system with many variables, and sometimes, issues like these require a bit of extra troubleshooting. Remember, the Linux community is always here to help.

What is GTK+?

GTK+ (GIMP Toolkit) is a popular open-source toolkit for creating graphical user interfaces (GUIs) for software applications. It provides a set of tools and libraries that allow developers to create visually appealing and interactive interfaces for their applications.

How do I open a terminal in Ubuntu 18.04?

To open a terminal in Ubuntu 18.04, you can use the keyboard shortcut Ctrl + Alt + T. Alternatively, you can search for "Terminal" in the applications menu and click on the Terminal icon to open it.

What does the `sudo` command do?

The sudo command in Linux allows users to run commands with administrative privileges. It stands for "Super User Do" and is often used to perform tasks that require root or administrative access, such as installing or removing packages, modifying system settings, or running commands that affect system files.

How do I install packages in Ubuntu using `apt-get`?

To install packages in Ubuntu using the apt-get command, you can run the following command in the terminal:

sudo apt-get install [package-name]

Replace [package-name] with the name of the package you want to install. This command will download and install the specified package along with any necessary dependencies.

Can I install packages from unofficial sources in Ubuntu?

While it is possible to install packages from unofficial sources in Ubuntu, it is generally not recommended. Packages from unofficial sources may not be properly maintained, could contain malware or security vulnerabilities, and may cause conflicts or instability on your system. It is best to stick to official repositories and trusted sources when installing packages.

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