Open Source PeaZip EXE upx.exe

How to Download and Fix Upx.exe Errors

Last Updated: 11/24/2023
[Average Article Time to Read: 4.7 minutes]

UPX executable packer files such as upx.exe utilize the EXE file extension. This file is considered a Win64 EXE (Executable application) file, and was first created by Open Source for the UPX software package.

upx.exe was first released in the Windows 10 Operating System on 09/01/2019 with PeaZip 6.9.2. This file marks the latest update from Open Source, according to our records.

Continue reading below to discover detailed file information, EXE file troubleshooting, and free downloads of several versions of upx.exe.

File Analysis Provided by Jason Geater (Author)

File Overview

General Information ^✻
File Name:	upx.exe
File Extension:	EXE file extension
Description:	UPX executable packer
Object File Type:	Executable application
File Operating System:	Win32
MIME Type:	application/octet-stream
User Popularity Rating:

Developer and Software Information
Software Developer:	The UPX Team https://upx.github.io
Software Program:	UPX
Legal Copyright:	© 1996-2018 Markus F.X.J. Oberhumer

File Details
Character Set:	Unicode
Language Code:	English (U.S.)
File Flags:	(none)
File Flags Mask:	0x003f
Entry Point:	0x208ce0
Code Size:	405504

View Other upx.exe Information

File Info	Description
File Size:	397 kB
File Modification Date/Time:	2020:01:28 07:19:42+00:00
File Type:	Win64 EXE
MIME Type:	application/octet-stream
Machine Type:	AMD AMD64
Time Stamp:	0000:00:00 00:00:00
PE Type:	PE32+
Linker Version:	2.25
Code Size:	405504
Initialized Data Size:	4096
Uninitialized Data Size:	1728512
Entry Point:	0x208ce0
OS Version:	4.0
Image Version:	0.0
Subsystem Version:	5.2
Subsystem:	Windows command line
File Version Number:	3.95.0.0
Product Version Number:	3.95.0.0
File Flags Mask:	0x003f
File Flags:	(none)
File OS:	Win32
Object File Type:	Executable application
File Subtype:	0
Language Code:	English (U.S.)
Character Set:	Unicode
Company Name:	The UPX Team https://upx.github.io
File Description:	UPX executable packer
File Version:	3.95 (2018-08-26)
Internal Name:	upx.exe
Legal Copyright:	© 1996-2018 Markus F.X.J. Oberhumer
Product Name:	UPX
Product Version:	3.95 (2018-08-26)

^✻ Portions of file data provided by Exiftool (Phil Harvey) distributed under the Perl Artistic License.

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What are upx.exe Error Messages?

upx.exe Runtime Errors

Runtime errors are PeaZip errors that occur during "runtime". Runtime is pretty self-explanatory; it means that these EXE errors are triggered when upx.exe is attempted to be loaded either when PeaZip is starting up, or in some cases already running. Runtime errors are the most common form of EXE error you will encounter using PeaZip.

In most cases, upx.exe runtime errors occurring while the program is running will result in the program terminating abnormally. Most of these upx.exe error messages mean that PeaZip was either unable to locate this file on startup, or the file is corrupt, resulting in a prematurely-aborted startup process. Generally, PeaZip will be unable to start without resolving these errors.

Some of the most common upx.exe errors include:

upx.exe - Bad Image.
upx.exe Application Error.
upx.exe could not be found.
upx.exe could not be installed.
upx.exe could not be launched. Class not registered.
upx.exe could not be started.
upx.exe failed to initialize properly.
upx.exe has encountered a problem and needs to close. We are sorry for the inconvenience.
upx.exe is not a valid Win32 application.
upx.exe is not running.
Cannot find upx.exe.
Error starting program: upx.exe.
Faulting Application Path: upx.exe.
The file upx.exe is missing or corrupt.
Windows failed to start - upx.exe.

System Error

The program can’t start because upx.exe is missing from your computer. Try reinstalling the program to fix this problem.

Thus, it's critical to make sure your anti-virus is kept up-to-date and scanning regularly.

Finding the source of the upx.exe error is key to properly resolving these errors. Although most of these EXE errors affecting upx.exe will happen during startup, occasionally you will encounter a runtime error while using UPX. This can occur due to poor programming on behalf of The UPX Team https://upx.github.io, conflicts with other software or 3rd-party plug-ins, or caused by damaged and outdated hardware. Also, these types of upx.exe errors can occur if it has been accidentally moved, deleted, or corrupted by a malware infection. Thus, it's critical to make sure your anti-virus is kept up-to-date and scanning regularly.

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How to Fix upx.exe Errors in 3 Steps (Time to complete: ~5-15 minutes)

If you're encountering one of the error messages above, follow these troubleshooting steps to resolve your upx.exe issue. These troubleshooting steps are listed in the recommended order of execution.

Step 1: Restore your PC back to the latest restore point, "snapshot", or backup image before error occurred.

To begin System Restore (Windows XP, Vista, 7, 8, and 10):

Hit the Windows Start button
When you see the search box, type "System Restore" and press "ENTER".
In the search results, find and click System Restore.
Please enter the administrator password (if applicable / prompted).
Follow the steps in the System Restore Wizard to choose a relevant restore point.
Restore your computer to that backup image.

If the Step 1 fails to resolve the upx.exe error, please proceed to the Step 2 below.

Step 2: If recently installed PeaZip (or related software), uninstall then try reinstalling PeaZip software.

You can uninstall PeaZip software by following these instructions (Windows XP, Vista, 7, 8, and 10):

Hit the Windows Start button
In the search box, type "Uninstall" and press "ENTER".
In the search results, find and click "Add or Remove Programs"
Find the entry for PeaZip 6.9.2 and click "Uninstall"
Follow the prompts for uninstallation.

After the software has been fully uninstalled, restart your PC and reinstall PeaZip software.

If this Step 2 fails as well, please proceed to the Step 3 below.

PeaZip 6.9.2

Open Source

Step 3: Perform a Windows Update.

When the first two steps haven't solved your issue, it might be a good idea to run Windows Update. Many upx.exe error messages that are encountered can be contributed to an outdated Windows Operating System. To run Windows Update, please follow these easy steps:

Hit the Windows Start button
In the search box, type "Update" and press "ENTER".
In the Windows Update dialog box, click "Check for Updates" (or similar button depending on your Windows version)
If updates are available for download, click "Install Updates".
After the update is completed, restart your PC.

If Windows Update failed to resolve the upx.exe error message, please proceed to next step. Please note that this final step is recommended for advanced PC users only.

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If Those Steps Fail: Download and Replace Your upx.exe File (Caution: Advanced)

If none of the previous three troubleshooting steps have resolved your issue, you can try a more aggressive approach (Note: Not recommended for amateur PC users) by downloading and replacing your appropriate upx.exe file version. We maintain a comprehensive database of 100% malware-free upx.exe files for every applicable version of PeaZip. Please follow the steps below to download and properly replace you file:

Locate your Windows operating system version in the list of below "Download upx.exe Files".
Click the appropriate "Download Now" button and download your Windows file version.
Copy this file to the appropriate PeaZip folder location:

Windows 10: C:\Dev-Pas\Bin\
Windows 10: C:\Program Files\PeaZip\res\upx\
Windows 10: C:\Program Files (x86)\PeaZip\res\upx\
Restart your computer.

If this final step has failed and you're still encountering the error, you're only remaining option is to do a clean installation of Windows 10.

GEEK TIP : We must emphasize that reinstalling Windows will be a very time-consuming and advanced task to resolve upx.exe problems. To avoid data loss, you must be sure that you have backed-up all of your important documents, pictures, software installers, and other personal data before beginning the process. If you are not currently backing up your data, you need to do so immediately.

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Download upx.exe Files (Malware-Tested 100% Clean)

CAUTION : We strongly advise against downloading and copying upx.exe to your appropriate Windows system directory. Open Source typically does not release PeaZip EXE files for download because they are bundled together inside of a software installer. The installer's task is to ensure that all correct verifications have been made before installing and placing upx.exe and all other EXE files for PeaZip. An incorrectly installed EXE file may create system instability and could cause your program or operating system to stop functioning altogether. Proceed with caution.

Bloodshed Dev-Pascal 1.9.2

File Name

Software Version

File Version

Architecture

upx.exe

1.20.0.0

1.20

64-bit (x64)

Expand for Detailed File Information +

OS Version:	Windows 10
Software:	UPX
Software Version:	1.20.0.0
File Version:	1.20
File Size:	89600
File Date:	01/01/2020
MD5 Checksum:	d189fdc70e78db8a51833342d732abdb
SHA1 Checksum:	a89324f8443a0928c1eabbd334278cbf0dd57109
SHA256 Checksum:	6e8b43f3e3287e95a7e9debd065e5915d9a557b1c8191d388939fb1169c79041
CRC32:
File Directory Location:	C:\Dev-Pas\Bin\

File Version, System, and Machine Information
File Type:	Win32 EXE
Image Version:	0.0
Initialized Data Size:	4096
Linker Version:	6.0
Machine Type:	Intel 386 or later, and compatibles
PE Type:	PE32
Subsystem:	Windows command line
Subsystem Version:	4.0
File Modification Date/Time:	01/01/2020

PeaZip 6.9.2

File Name

Software Version

File Version

Architecture

upx.exe

3.95.0.0

3.95 (2018-08-26)

64-bit (x64)

Expand for Detailed File Information +

OS Version:	Windows 10
Software:	UPX
Software Version:	3.95.0.0
File Version:	3.95 (2018-08-26)
File Size:	406528
File Date:	01/28/2020
MD5 Checksum:	8b8f4dfb276d2271bcb80e5e81ee7743
SHA1 Checksum:	c3504ea080d5df6cf361a386e90a37968afd8755
SHA256 Checksum:	3660fa3c1e91917e8388c85e222bf3973edebf89f5898b2908111c981481dd40
CRC32:
File Directory Location:	C:\Program Files\PeaZip\res\upx\

File Version, System, and Machine Information
File Type:	Win64 EXE
Image Version:	0.0
Initialized Data Size:	4096
Linker Version:	2.25
Machine Type:	AMD AMD64
PE Type:	PE32+
Subsystem:	Windows command line
Subsystem Version:	5.2
File Modification Date/Time:	01/28/2020

upx.exe

3.95.0.0

3.95 (2018-08-26)

64-bit (x64)

Expand for Detailed File Information +

OS Version:	Windows 10
Software:	UPX
Software Version:	3.95.0.0
File Version:	3.95 (2018-08-26)
File Size:	404480
File Date:	11/14/2019
MD5 Checksum:	f65e13be9d28a357eec92868e751c1a0
SHA1 Checksum:	f43eff33bfb5f828f568c43a90632af0f4e95d37
SHA256 Checksum:	803bd799ffa8bac5113f230b6eb21bff543b8670d225e47e263b75c44692634e
CRC32:
File Directory Location:	C:\Program Files (x86)\PeaZip\res\upx\

File Version, System, and Machine Information
File Type:	Win32 EXE
Image Version:	1.0
Initialized Data Size:	4096
Linker Version:	2.25
Machine Type:	Intel 386 or later, and compatibles
PE Type:	PE32
Subsystem:	Windows command line
Subsystem Version:	4.0
File Modification Date/Time:	11/14/2019

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Files Related to upx.exe

EXE Files Related to upx.exe

File Name	Description	Software Program (Version)	File Size (bytes)	File Location
7z.exe	7-Zip Console	7-Zip (19.00)	468992	C:\Program Files (x86)\Razer\Razer Cortex\x64\
upx.exe	UPX executable packer	UPX (3.95 (2018-08-26))	404480	C:\Program Files\WindowsApps\Microsoft.StorePur...
OneDriveUpdaterService...	Updater Service	Microsoft OneDrive (19.174.0902.0013)	2492024	C:\Users\Tester\AppData\Local\
pea.exe	Pea: pack, encrypt, authenticate	Pea (0.65.0)	2854400	C:\Program Files\WindowsApps\Deleted\Microsoft....
peazip-configuration.exe	PeaZip configuration Setup	PeaZip 6.9.2	605747	C:\Program Files\WindowsApps\Microsoft.SkypeApp...

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