Downloads of v 3.09:


Last Update:

12 Jun 2013

Package Maintainer(s):

Software Author(s):

  • Markus Oberhumer
  • Laszlo Molnar
  • John Reiser


compression executable packer exepacker


This is not the latest version of upx available.

3.09 | Updated: 12 Jun 2013



Downloads of v 3.09:


Software Author(s):

  • Markus Oberhumer
  • Laszlo Molnar
  • John Reiser

upx 3.09

This is not the latest version of upx available.

Some Checks Have Failed or Are Not Yet Complete

1 Test Unknown and 1 Passing Test

Validation Testing Unknown

Verification Testing Passed


To install upx, run the following command from the command line or from PowerShell:


To upgrade upx, run the following command from the command line or from PowerShell:


To uninstall upx, run the following command from the command line or from PowerShell:


NOTE: This applies to both open source and commercial editions of Chocolatey.

1. Ensure you are set for organizational deployment

Please see the organizational deployment guide

  • Open Source or Commercial:
    • Proxy Repository - Create a proxy nuget repository on Nexus, Artifactory Pro, or a proxy Chocolatey repository on ProGet. Point your upstream to Packages cache on first access automatically. Make sure your choco clients are using your proxy repository as a source and NOT the default community repository. See source command for more information.
    • You can also just download the package and push it to a repository Download

3. Enter your internal repository url

(this should look similar to

4. Choose your deployment method:

choco upgrade upx -y --source="'STEP 3 URL'" [other options]

See options you can pass to upgrade.

See best practices for scripting.

Add this to a PowerShell script or use a Batch script with tools and in places where you are calling directly to Chocolatey. If you are integrating, keep in mind enhanced exit codes.

If you do use a PowerShell script, use the following to ensure bad exit codes are shown as failures:

choco upgrade upx -y --source="'STEP 3 URL'"

Write-Verbose "Exit code was $exitCode"
$validExitCodes = @(0, 1605, 1614, 1641, 3010)
if ($validExitCodes -contains $exitCode) {
  Exit 0

Exit $exitCode

- name: Ensure upx installed
    name: upx
    state: present
    version: 3.09
    source: STEP 3 URL

See docs at

Coming early 2020! Central Managment Reporting available now! More information...

chocolatey_package 'upx' do
  action    :install
  version  '3.09'
  source   'STEP 3 URL'

See docs at

    Name: upx,
    Version: 3.09,
    Source: STEP 3 URL

Requires Otter Chocolatey Extension. See docs at

cChocoPackageInstaller upx
   Name     = 'upx'
   Ensure   = 'Present'
   Version  = '3.09'
   Source   = 'STEP 3 URL'

Requires cChoco DSC Resource. See docs at

package { 'upx':
  provider => 'chocolatey',
  ensure   => '3.09',
  source   => 'STEP 3 URL',

Requires Puppet Chocolatey Provider module. See docs at

salt '*' chocolatey.install upx version="3.09" source="STEP 3 URL"

See docs at

5. If applicable - Chocolatey configuration/installation

See infrastructure management matrix for Chocolatey configuration elements and examples.

This package was approved as a trusted package on 23 Jan 2020.


UPX achieves an excellent compression ratio and offers very fast decompression. Your executables suffer no memory overhead or other drawbacks for most of the formats supported, because of in-place decompression.

Log in or click on link to see number of positives.

In cases where actual malware is found, the packages are subject to removal. Software sometimes has false positives. Moderators do not necessarily validate the safety of the underlying software, only that a package retrieves software from the official distribution point and/or validate embedded software against official distribution point (where distribution rights allow redistribution).

Chocolatey Pro provides runtime protection from possible malware.

Version Downloads Last Updated Status
Ultimate Packer for eXecutables 3.95 20608 Saturday, February 9, 2019 Approved
Ultimate Packer for eXecutables 3.94 16385 Tuesday, October 31, 2017 Approved
Ultimate Packer for eXecutables 3.91 8482 Wednesday, July 8, 2015 Approved
upx 3.09 1285 Wednesday, June 12, 2013 Approved
upx 3.08 804 Friday, February 15, 2013 Approved
Ultimate Packer for eXecutables 3.07 332 Monday, May 16, 2016 Approved

This package has no dependencies.

Discussion for the upx Package

Ground Rules:

  • This discussion is only about upx and the upx package. If you have feedback for Chocolatey, please contact the Google Group.
  • This discussion will carry over multiple versions. If you have a comment about a particular version, please note that in your comments.
  • The maintainers of this Chocolatey Package will be notified about new comments that are posted to this Disqus thread, however, it is NOT a guarantee that you will get a response. If you do not hear back from the maintainers after posting a message below, please follow up by using the link on the left side of this page or follow this link to contact maintainers. If you still hear nothing back, please follow the package triage process.
  • Tell us what you love about the package or upx, or tell us what needs improvement.
  • Share your experiences with the package, or extra configuration or gotchas that you've found.
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