Troubleshooting Guide: How to Resolve Error: Command Errored Out with Exit Status 1

This guide aims to help developers troubleshoot and resolve the common Python error, "Error: Command errored out with exit status 1." This error occurs when a package installation or build fails, and the error message is often accompanied by additional details about the cause of the failure. In this guide, we will walk through some common scenarios and solutions to this error.


Before diving into troubleshooting, please ensure that you have the following software installed on your system:

Table of Contents

  1. Understanding the Error
  2. Possible Causes and Solutions
  3. Missing Dependencies
  4. Incorrect Python or Package Version
  5. Corrupted Package Cache
  6. Permission Issues
  7. FAQ
  8. Related Links

Understanding the Error

The "Error: Command errored out with exit status 1" error message is a generic message that indicates a package installation or build failure. To uncover the root cause of the error, you'll need to examine the additional information provided in the error message. This information typically includes details about the command that failed, the environment, and the specific error encountered.

Possible Causes and Solutions

In this section, we will explore some common causes of the "Error: Command errored out with exit status 1" error and their corresponding solutions.

Missing Dependencies

One common cause of this error is missing dependencies required to build or install a package. The error message will usually mention the missing dependency.

Solution: Install the missing dependency using pip or your system's package manager. For example:

pip install missing-dependency

Incorrect Python or Package Version

Another possible cause is an incompatibility between the Python version you're using and the package version you're trying to install. The error message may mention the incompatible versions.

Solution: Verify that you are using the correct Python version and try installing a compatible package version. For example, to install a specific package version, use:

pip install package-name==1.2.3

Corrupted Package Cache

Sometimes, the package cache can become corrupted, leading to installation failures.

Solution: Clear your package cache using the following command:

pip cache purge

After clearing the cache, try installing the package again.

Permission Issues

Permission issues can also cause installation failures. For instance, you might not have the necessary permissions to install packages in the system-wide site-packages directory.

Solution: Try installing the package in your user's site-packages directory using the --user flag:

pip install --user package-name


1. How do I check my Python version?

Use the following command to check your Python version:

python --version

2. How do I check my pip version?

Use the following command to check your pip version:

pip --version

3. How do I list all installed Python packages?

Use the following command to list all installed Python packages:

pip list

4. How do I uninstall a Python package?

Use the following command to uninstall a Python package:

pip uninstall package-name

5. How do I upgrade an installed Python package?

Use the following command to upgrade an installed Python package:

pip install --upgrade package-name

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