Sub-process /usr/bin/dpkg returned an error code (1)_
Sub-process /usr/bin/dpkg returned an error code (1)
Seeing Sub-process /usr/bin/dpkg returned an error code (1) on Ubuntu means the OS detected "Sub-process /usr/bin/dpkg returned an error code (1)". Before reinstalling anything, work through the steps below — the fix is often simpler than it looks.
What Actually Happened
Package manager encountered: a package's post-install script failed, which is often visible a few lines above this summary message.
Symptoms
APT command failed: 'Sub-process /usr/bin/dpkg returned an error code (1)'
Common Causes
- Package state: a package's post-install script failed, which is often visible a few lines above this summary message
How to Fix It
-
01
Refresh package index:
sudo apt update -
02
Fix broken dependencies:
sudo apt --fix-broken install -
03
Configure pending packages:
sudo dpkg --configure -a
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Root Cause Breakdown
dpkg/APT constraint resolver aborted transaction.
Should You Worry?
Safe. Package manager halts to prevent further corruption.
Power-User Tip
Always run sudo apt update before attempting repair commands.
Always free