Software⏱️ 3 min read📅 2026-06-19

How to Fix: ERROR: Not found source for system packages (release 10.04) in APT software sources configuration - Plesk Autoinstaller

Error fixing guide for APT software sources configuration in Plesk Autoinstaller on Ubuntu 10.04.

Quick Answer: Update the package list and add the correct repository for Plesk, then try reinstalling.

📋 Table of Contents

  1. 🛑 Root Causes of the Error
  2. 🚀 How to Resolve This Issue
  3. 💡 Conclusion

The ERROR: Not found source for system packages (release 10.04) in APT software sources configuration error is typically encountered when the APT package manager is unable to locate the required source files for installing Plesk on a Ubuntu-based system, specifically on release 10.04.

This issue can be frustrating as it prevents the successful installation of Plesk, and it may lead to further complications if not addressed promptly.

🛑 Root Causes of the Error

  • The primary reason for this error is that the APT package manager is unable to find the required source files due to a mismatch between the system's package list and the version of Ubuntu installed. In your case, you upgraded from Ubuntu 8.04 to 10.04, which may have caused the plesk package to be removed or not properly configured.
  • Another possible reason is that the APT software sources configuration has been altered or corrupted during the upgrade process, leading to an incorrect source for system packages.

🚀 How to Resolve This Issue

Update APT package list and add Plesk's repository

  1. Step 1: Open a terminal on your server and run the following command to update the APT package list: `sudo apt-get update`.
  2. Step 2: Next, add the Plesk repository by running the following command: `sudo add-apt-repository ppa:tarkus/ubuntu`.
  3. Step 3: Then, update the APT package list again using the same command as above (`sudo apt-get update`).

Reinstall Plesk from scratch

  1. Step 1: Download the Plesk installer for Ubuntu 10.04 (32-bit) from the official website: http://www.parallels.com/download/plesk/installer/
  2. Step 2: Transfer the downloaded installer to your server using SFTP or another secure method.
  3. Step 3: Run the Plesk installer using SSH, following the on-screen instructions: `./parallels_installer_v3.12.0_build120601.16_os_Ubuntu_10.04_i386`.

💡 Conclusion

To resolve the ERROR: Not found source for system packages (release 10.04) in APT software sources configuration error, you can try updating the APT package list and adding Plesk's repository or reinstalling Plesk from scratch. If you are unsure about which method to use, it is recommended to consult the official Plesk documentation or seek assistance from a qualified IT professional.

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