Software & AppsOperating SystemLinux

How To Fix Ubuntu Package Installation Error for libcurl4

Ubuntu 8

In this article, we will walk you through the process of fixing the Ubuntu package installation error for libcurl4. This is a common issue that many Ubuntu users encounter, and it can be resolved by following a few simple steps.


Libcurl4 is a free and easy-to-use client-side URL transfer library, supporting DICT, FILE, FTP, FTPS, Gopher, HTTP, HTTPS, IMAP, IMAPS, LDAP, LDAPS, POP3, POP3S, RTMP, RTSP, SCP, SFTP, SMTP, SMTPS, Telnet and TFTP. It is used by many applications for network communication. However, sometimes, when trying to install libcurl4 on Ubuntu, you might encounter some errors. This guide will help you troubleshoot and resolve these issues.


To follow this guide, you will need:

  • A system running Ubuntu 18.04 or later.
  • Sudo or root access to the system.

Step 1: Update the Package Lists

The first step in resolving the issue is to update your package lists. This can be done by running the following command:

sudo apt-get update

This command updates the list of available packages and their versions, but it does not install or upgrade any packages.

Step 2: Switch to a Different Repository

If you encounter a “404 Not Found” error while fetching the libcurl4 package, it could be due to an outdated or incorrect package repository. In this case, you can switch to a different repository by editing the sources list file:

sudoedit /etc/apt/sources.list

This command opens the sources.list file in a text editor with root privileges. Add the following line to the file and save it:

deb bionic-security main

This line adds a new repository from which to fetch packages.

Step 3: Refresh the Package Lists

After switching to a different repository, you should refresh the package lists again:

sudo apt-get update

This command will now fetch the package lists from the new repository.

Step 4: Install libcurl4

Now, you can attempt to install libcurl4 again:

sudo apt-get install libcurl4

This command installs the libcurl4 package.

Step 5: Install the Development Version of libcurl4

If the installation still fails, you can try installing the development version of libcurl4, which includes headers and additional documentation. To do this, run the following command:

sudo apt-get install libcurl4-openssl-dev --fix-broken

This command installs the development version of libcurl4 and attempts to fix any broken dependencies.

Note that there are different dev versions of libcurl4 available, depending on the backend TLS you want to use. These include libcurl4-openssl-dev, libcurl4-nss-dev, and libcurl4-gnutls-dev. Choose the appropriate one for your needs.


If none of the above solutions work, it may be necessary to troubleshoot further or seek additional assistance. However, in most cases, following these steps should resolve the Ubuntu package installation error for libcurl4.

Remember, it’s important to keep your system updated and to regularly check for and fix broken packages to ensure the smooth operation of your Ubuntu system.

How do I check the version of Ubuntu I am running?

You can check the version of Ubuntu you are running by opening a terminal and running the command lsb_release -a.

Can I use these steps for versions of Ubuntu older than 18.04?

These steps are specifically for Ubuntu 18.04 or later. For older versions, the process may be slightly different, and it is recommended to consult the official Ubuntu documentation or community forums for specific instructions.

What if I don’t have sudo or root access to the system?

If you don’t have sudo or root access, you will need to contact your system administrator or the person who has administrative privileges on the system to perform these steps.

How do I know if libcurl4 is already installed on my system?

You can check if libcurl4 is already installed on your system by running the command dpkg -l | grep libcurl4. If it returns any output, it means libcurl4 is already installed.

Can I use a different repository other than the one mentioned in Step 2?

Yes, you can use a different repository. Just make sure to replace the repository URL in Step 2 with the appropriate one for your system.

What if I encounter errors during the installation process?

If you encounter errors during the installation process, it is recommended to carefully read the error message and search for solutions online. The Ubuntu community forums and official documentation are great resources for troubleshooting installation errors.

Leave a Comment

Your email address will not be published. Required fields are marked *