Software⏱️ 2 min read📅 2026-05-31

How to Fix: How can I fix apt error "W: Target Packages ... is configured multiple times"?

Fix apt error "W: Target Packages ... is configured multiple times"

Quick Answer: Remove the duplicate lines from /etc/apt/sources.list and try running sudo apt-get update again.

The error 'W: Target Packages ... is configured multiple times' occurs when the same package source is listed multiple times in your system's /etc/apt/sources.list file. This can be caused by a variety of factors such as incorrect configuration, incomplete removal of previous packages, or incorrect installation of new software.

🛑 Root Causes of the Error

  • Incorrect configuration in /etc/apt/sources.list file.
  • Incomplete removal of previous packages.
  • Incorrect installation of new software.

🛠️ Step-by-Step Verified Fixes

Method 1: Editing /etc/apt/sources.list File

  1. Step 1: Open the terminal and edit the /etc/apt/sources.list file using your preferred editor (e.g. nano or vim).

Method 2: Removing Duplicate Sources

  1. Step 1: Open the terminal and run the command `sudo nano /etc/apt/sources.list` to edit the file.
  2. Step 2: Locate the duplicate source entries in the file, and remove them by deleting the lines.

✨ Wrapping Up

To resolve this issue, identify the duplicate source entries in your /etc/apt/sources.list file and remove them. Then, try running `sudo apt-get update` again to verify that the error is resolved.

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