Current Customers: Contact PKWARE® Product Support online or call +1.937.847.2687 (8:00 a.m. - 5:00 p.m. CT).
All other inquires should be directed to your regional sales representative: http://www.pkware.com/contact

Windows Product Updates
Ensure that you are current on maintenance releases and using the most updated versions of SecureZIP® and PKZIP® for Windows® products.
v14 Maintenance Release
This maintenance release is available for all users of PKZIP/SecureZIP for Desktop current on maintenance. It provides the following product enhancements and fixes.
Depending on the terms of your maintenance agreement, this upgrade may have an associated cost.
v14 Downloads
| Standard Edition | Type | Size | Download |
|---|---|---|---|
| PKZIP Standard for Windows Desktop 14 | 32-bit | 22.6MB | ![]() |
| PKZIP Standard for Windows Desktop 14 | 64-bit | 27.6MB | ![]() |
| SecureZIP Standard for Windows Desktop 14 | 32-bit | 23.7MB | ![]() |
| SecureZIP Standard for Windows Desktop 14 | 64-bit | 28.9MB | ![]() |
| Instructions for Installing the Maintenance Release | |||
| Enterprise Edition | Type | Size | Download |
| PKZIP Enterprise for Windows Desktop 14 | 32-bit | 27.4MB | ![]() |
| PKZIP Enterprise for Windows Desktop 14 | 64-bit | 32.4MB | ![]() |
| SecureZIP Enterprise for Windows Desktop 14 | 32-bit | 28.5MB | ![]() |
| SecureZIP Enterprise for Windows Desktop 14 | 64-bit | 33.6MB | ![]() |
| Instructions for Installing the Maintenance Release | |||
| Command Line | Type | Size | Download |
| PKZIP Command Line Add-on | 32-bit | 4.97MB | ![]() |
| SecureZIP Command Line | 32-bit | 4.97MB | ![]() |
| ZIP Reader | Type | Size | Download |
| ZIP Reader | 32-bit | 2.92MB | ![]() |
v14 Product Enhancements
v14 Product Fixes
Click to view archived maintenance releases
Click to hide archived maintenance releases
Depending on the terms of your maintenance agreement, this upgrade may have an associated cost.
12.5 Product Enhancements
Standard and Enterprise Edition
Added capability to display message digest in support of ONC Final Rule, Module S (Integrity)
Support integration with Microsoft Office 2010
Extract WavPack files within ZIP archives
Extract files from archives created on IBM z/OS using hardware compression tools
Changes in FIPS Mode to support NIST algorithm changes affective end of 2010
Custom alternative extensions for mailed .ZIP archives12.5 Product Fixes
Standard Edition
9218 Corrected unexpected program behavior when opening a zip file with a file name greater than 260 characters
1901 Improved certificate searches
1924 Improved ReZip function
2096 Improved Local Certificate Search
5068 Updates to “Get a Certificate”
7001 Improved error reporting of File Name encrypted archive
8394 Cosmetic change to FIPS Mode
8542 Added PPMd function on 64-bit Windows OS
8549 Added minimize button to progress dialog
8647 Added .png to default mail extension exclusion list
8786 Improved function when converting from RAR to ZIP
8798 Added support for self-extracting CAB files
8806 Moved “Get Digital Certificate” button to fluent interface help menu
9053 Revised library module loading in support of recent security best practices published by Microsoft
Enterprise Edition
8394 Improved Fluent User Interface when FIPS Mode is locked
8758 Disabled use of SHA-1 for signing when in FIPS Mode12.5 Downloads
| Standard Edition | Type | Size | Download |
|---|---|---|---|
| PKZIP Standard for Windows Desktop 12.5 | 32-bit | 17.8MB | ![]() |
| PKZIP Standard for Windows Desktop 12.5 | 64-bit | 20.6MB | ![]() |
| SecureZIP Standard for Windows Desktop 12.5 | 32-bit | 19.1MB | ![]() |
| SecureZIP Standard for Windows Desktop 12.5 | 64-bit | 22MB | ![]() |
| Instructions for Installing the Maintenance Release | |||
| Enterprise Edition | Type | Size | Download |
| PKZIP Enterprise for Windows Desktop 12.5 | 32-bit | 21MB | ![]() |
| PKZIP Enterprise for Windows Desktop 12.5 | 64-bit | 23.8MB | ![]() |
| SecureZIP Enterprise for Windows Desktop 12.5 | 32-bit | 23.2MB | ![]() |
| SecureZIP Enterprise for Windows Desktop 12.5 | 64-bit | 26.1MB | ![]() |
| Instructions for Installing the Maintenance Release | |||
| Command Line | Type | Size | Download |
| PKZIP Command Line Add-on | 32-bit | 5.19MB | ![]() |
| SecureZIP Command Line | 32-bit | 5.19MB | ![]() |
| ZIP Reader | Type | Size | Download |
| ZIP Reader | 32-bit | 2.92MB | ![]() |
v12 Maintenance Release 4
This maintenance release is available for all users of SecureZIP for Desktop v12.2 or 12.3. It provides the following product enhancements and fixes.
If you are a PKZIP customer updating from 9.x or earlier, you will need to obtain a new license key. Your current v9.x key will not work with this update. Customers on maintenance should contact PKWARE Customer Service to obtain a new key for this update.
If you are a SecureZIP customer updating from 12.1 or earlier, you will need to obtain a new license key. Your current v12.1 key will not work with this update. Customers on maintenance should contact PKWARE Customer Service to obtain a new key for this update
PKZIP/SecureZIP Standard 12.4 Enhancements:
- Both: Supports operation on Windows 7
- Both: Improved usability through support for ["Office fluent"-style ribbon]
- Both: Support for selecting conventional for [new] UI
- Both: 64-bit edition for use with 64-bit versions of Windows Vista and Windows 7
- Both: Korean LDAP Support
- PKZIP: Support for extracting .Z compressed files
- PKZIP: Support for LZMA compression
- PKZIP: Support for PPMd compression
- PKZIP: SaveSecure
- PKZIP: MIME reader for opening message body encrypted emails
- PKZIP: FIPS capability
- PKZIP: UTF-8 file names and comments
- PKZIP: Email body encryption
- PKZIP: Encrypt Outlook calendar attachments
- PKZIP: Passphrase hardening
- PKZIP: Deprecation of BSAFE
- PKZIP: Extract files from .Z format compressed files
- 7802 Improved memory handling when using program options feature.
- 7847 Corrected a problem using the Paste button for entering a license key.
- 7943 Corrected a problem caused by a Microsoft Outlook Inspector Object error.
- 7981 Added support for retrieving digital certificates from Korean LDAP providers.
- 7992 Expanded reporting to provide additional information errors encountered when retrieving digital certificates from LDAP providers.
- 7995 Corrected a problem that may cause a program crash when retrieving digital certificates from LDAP providers using domain information in a user ID.
- 8006 Corrected a problem extracting files in the .Z archive format when files contain less than 3 bytes of information.
- 8061 Improved error reporting for digital signatures that cannot be validated.
- 8260 Added support for opening ZIP files having a .ZIPX file extension.
- 8288 Remove support for Outlook Express and Windows Mail integration as these features will no longer be available on Windows.
- 8343 Remove support for using PPMd compression on 64-bit versions of Windows.
- 8378 Corrected a problem that may cause the program to end when using the Wizard.
- 8467 Corrected a problem that causes PKZIP to prompt for a password multiple times.
- 8653 Corrected a problem in which Outlook 2007 may have crashed
Instructions for Installing the Windows® Maintenance Release
| Windows | ||
| Name | Format | Size |
| PKZIP® Standard for Windows Desktop 12.4 [32-bit] | EXE | 16.7MB |
| PKZIP® Standard for Windows Desktop 12.4 [64-bit] | EXE | 19.0MB |
| SecureZIP® Standard for Windows Desktop 12.4 [32-bit] | EXE | 18.0MB |
| SecureZIP® Standard for Windows Desktop 12.4 [64-bit] | EXE | 20.3MB |
PKZIP/SecureZIP Enterprise v12.4 Enhancements
Both: Supports operation on Windows 7
SecureZIP: 64-bit edition of SecureZIP for use with 64-bit versions of Windows Vista
and Windows 7
- PKZIP: Support for deploying "unlocked" settings through policy
- PKZIP: Support for extracting .Z compressed files
- PKZIP: Support for LZMA compression
- PKZIP: Support for PPMd compression
- PKZIP: SaveSecure
- PKZIP: MIME reader for opening message body encrypted emails
- PKZIP: FIPS capability
- PKZIP: UTF-8 file names and comments
- PKZIP: Email body encryption
- PKZIP: Encrypt Outlook calendar attachments
- PKZIP: Passphrase hardening
- PKZIP: Extract files from .Z format compressed files
Program Fixes:
- 7396 Revised PKWARE Policy Manager license key entry function to accept only license keys having the policy feature enabled.
- 8389 Corrected a problem were the default compression setting may not be read from the policy file
- 8464 The menu option for SecureZIP Enterprise Policy Manager have been renamed to PKWARE Policy Manager
Instructions for Installing the Windows® Maintenance Release
| Windows | ||
| Name | Format | Size |
| PKZIP® Enterprise for Windows Desktop 12.4 [32-bit] | EXE | 19.9MB |
| PKZIP® Enterprise for Windows Desktop 12.4 [64-bit] | EXE | 22.1MB |
| SecureZIP® Enterprise for Windows Desktop 12.4 [32-bit] | EXE | 21.1MB |
| SecureZIP® Enterprise for Windows Desktop 12.4 [64-bit] | EXE | 5.1MB |
SecureZIP® Enterprise Version 12 Maintenance Release 3
This maintenance release is available for users of SecureZIP Enterprise for Windows desktop versions 12.0, 12.1, and 12.2 that have purchased a maintenance agreement within the past year. It provides the enhancements and fixes listed below.
Note: If you are updating from version 12.0 or 12.1, your existing license key will not work with this update and you will require a new license key from PKWARE. Contact PKWARE Customer Service to obtain a new key for this update.
Product Enhancements:
- Expanded support for setting policy for 64-bit systems
- Compatibility for the Federal Desktop Core Configuration (FDCC)
- New support for improved data compression using PPMd
- New support for improved data compression using LZMA
- Support for running SecureZIP from 64-bit Windows Explorer on XP and Vista
- New ability to rename a ZIP attachment when sending email
- Improved support for Windows Vista dialogs
- 7775--Corrected a problem where options may be viewed for Server policy files that are not allowed to be locked
- 2849--Corrected a problem opening multiple archives when saving a very large archive.
- 2867--Corrected a problem when signing multiple files that asked for a private key password more often than is needed
- 5295--Added a new configurable option to set the default folder used with SaveSecure Office integration.
- 7187--Improved the display of messages with international characters when using the PKWARE MIME viewer.
- 7216--Improved program startup performance.
- 7248--Corrected a problem automatically opening encrypted messages using Outlook Express or Windows Mail.
- 7268--Corrected a problem extracting data from a GZIP archive that contains multiple files.
- 7391--Corrected a problem using message body encryption when Outlook is in non-cached Exchange mode. Users may see an error that the attachment size is too big and the message cannot be sent.
- 7436--Corrected a problem when re-encrypting message attachments using Outlook Express with message body encryption.
- 7437--Corrected a problem on Windows 2000 when installing SecureZIP on a machine that is running WinZip. An invalid, zero-byte ZIP file is created when using the New PKZIP file context menu.
- 7504--Corrected a problem using message body encryption with Windows Mail.
- 7524 Corrected a problem using SecureZIP with Outlook 2002 that resulted in an attachment called editdata.mso being added as an attached file to messages.
- 7532--Performance improvement when using SecureZIP.
- 7546--Updated user documentation to stress the importance backing up private keys.
- 7560--Extended support for new NIST FIPS 140 validation certificates for Windows.
- 7636--Corrected a problem when pressing "Default" on the encryption options tab. This issue caused "traditional PKWARE encryption" to incorrectly appear in the list of encryption methods when FIPS 140 mode is enabled.
- 7649--Corrected a problem when copying password encrypted files from an existing ZIP file to a new ZIP file by dropping them onto the SecureZIP desktop icon.
- 7659--Corrected a problem where SecureZIP may lock up unexpectedly when pressing OK in the Advanced Encryption options dialog.
- 7663--Corrected a problem where the wrong filename may be reported in an error message appearing when using email re-encryption with two files having invalid digital signatures.
- 7674--Added additional checks on directories to avoid incorrectly opening a directory as a file. This prevents errors when opening ZIP files using SecureZIP that may have been created incorrectly by 3rd-party ZIP programs.
- 7698--Prevent the same archive from being opened in more than one window at the same time.
- 7699--Corrected a problem when creating a PKSFX file that may cause the compression method and file type to incorrectly appear as bzip2.
- 7704--Corrected a problem where the PKSFX option does not appear in the context menu on a 64-bit version of Windows.
- 7749--Removed a performance issue when using SecureZIP with Outlook.
- 7753--Corrected a problem opening ZIP files having a very large ZIP comment field.
- 7761--Corrected a problem closing an archive using File | Close when auto-save is disabled.
- 7766--Corrected a problem with the save folder name function when using Save As under Vista to save an archive,
- 7805--Corrected a problem that may cause SecureZIP to terminate after simultaneously opening, closing and then re-opening multiple archives from within the Windows Explorer.
- 7812--Corrected a problem with the Open or Save folder name function when using Browse under Vista.
- 7830--Removed the system supplied default user name when requesting a digital certificate. Users must now always provide their own name to avoid incorrect default user names.
- 7845--Added use of consistent filenames when extracting unnamed files from GZIP, BZ2, or Z files using application integration.
- 7850--Corrected a problem that may cause SecureZIP to lock up when extracting a split CAB file.
- 7867--Corrected a problem with using SaveSecure with PowerPoint 2007 where ZIP files may be opened by SecureZIP if they contain the wrong document type for the application resulting in an error from PowerPoint or a possible termination of the PowerPoint program.
Select the download file below. This file is a PKSFX® Self-Extracting ZIP file. Run this file after the download completes. It will extract the installer for the SecureZIP desktop client and the installer for the SecureZIP Enterprise Policy Manager. Install the SecureZIP desktop client onto each desktop that will use SecureZIP. Install the SecureZIP Enterprise Policy Manager onto the machines that will be used to create SecureZIP policy files.
| Name | Format | Size |
| SecureZIP® Enterprise Version 12 Maintenance Release 3 |
EXE | 22.5MB |
SecureZIP® for Windows Version 12 Maintenance Release 3
This maintenance release is available for users of SecureZIP for Windows desktop versions 12.0, 12.1, and 12.2 that have purchased a maintenance agreement within the past year. It provides the enhancements and fixes listed below.
Note: If you are updating from version 12.0 or 12.1, your existing license key will not work with this update and you will require a new license key from PKWARE. Contact PKWARE Customer Service to obtain a new key for this update.
Product Enhancements:
- Compatibility for the Federal Desktop Core Configuration (FDCC)
- New support for improved data compression using PPMd
- New support for improved data compression using LZMA
- Support for running SecureZIP from 64-bit Windows Explorer on XP and Vista
- New ability to rename a ZIP attachment when sending email
- Improved support for Windows Vista dialogs
- 2849--Corrected a problem opening multiple archives when saving a very large archive.
- 2867--Corrected a problem when signing multiple files that asked for a private key password more often than needed.
- 5295--Corrected a column heading display problem that may occur on Vista.
- 7048--Added a new configurable option to set the default folder used with SaveSecure Office integration.
- 7187--Improved the display of messages with international characters when using the PKWARE MIME viewer.
- 7216--Improved program start-up performance.
- 7248--Corrected a problem automatically opening encrypted messages using Outlook Express or Windows Mail.
- 7268--Corrected a problem extracting data from a GZIP archive that contains multiple files.
- 7391--Corrected a problem using message body encryption when Outlook is in non-cached Exchange mode. Users may see an error that the attachment size is too big and the message cannot be sent.
- 7436--Corrected a problem when re-encrypting message attachments using Outlook Express with message body encryption.
- 7437--Corrected a problem on Windows 2000 when installing SecureZIP on a machine that is running WinZip. An invalid, zero-byte ZIP file is created when using the New PKZIP file context menu.
- 7504--Corrected a problem using message body encryption with Windows Mail.
- 7524--Corrected a problem using SecureZIP with Outlook 2002 that resulted in an attachment called editdata.mso being added as an attached file to messages.
- 7532--Performance improvement when using SecureZIP.
- 7546--Updated user documentation to stress the importance backing up private keys.
- 7560--Extended support for new NIST FIPS 140 validation certificates for Windows.
- 7636--Corrected a problem when pressing "Default" on the encryption options tab. This issue caused "traditional PKWARE encryption" to incorrectly appear in the list of encryption methods when FIPS 140 mode is enabled.
- 7649--Corrected a problem when copying password-encrypted files from an existing ZIP file to a new ZIP file by dropping them onto the SecureZIP desktop icon.
- 7659--Corrected a problem where SecureZIP may lock up unexpectedly when pressing OK in the Advanced Encryption options dialog.
- 7663--Corrected a problem where the wrong filename may be reported in an error message appearing when using email re-encryption with two files having invalid digital signatures.
- 7674--Added additional checks on directories to avoid incorrectly opening a directory as a file. This prevents errors when opening ZIP files using SecureZIP that may have been created incorrectly by 3rd party ZIP programs.
- 7698--Prevent the same archive from being opened in more than one window at the same time.
- 7699--Corrected a problem when creating a PKSFX file that may cause the compression method and file type to incorrectly appear as bzip2.
- 7704--Corrected a problem where the PKSFX option does not appear in the context menu on a 64-bit version of Windows.
- 7749--Removed a performance issue when using SecureZIP with Outlook.
- 7753--Corrected a problem opening ZIP files having a very large ZIP comment field.
- 7761--Corrected a problem closing an archive using File | Close when auto-save is disabled.
- 7766--Corrected a problem with the save folder name function when using Save As under Vista to save an archive.
- 7805--Corrected a problem that may cause SecureZIP to terminate after simultaneously opening, closing, and then re-opening multiple archives from within the Windows Explorer.
- 7812--Corrected a problem with the Open or Save folder name function when using Browse under Vista.
- 7830--Removed the system supplied default user name when requesting a digital certificate. User's must now always provide their own name to avoid incorrect default user names.
- 7845--Added use of consistent filenames when extracting unnamed files from GZIP, BZ2, or Z files using application integration.
- 7850--Corrected a problem that may cause SecureZIP to lock up when extracting a split CAB file.
- 7867--Corrected a problem using SaveSecure with PowerPoint 2007 where ZIP files may be opened by SecureZIP if they contain the wrong document type for the application resulting in an error from PowerPoint or a possible termination of the PowerPoint program. ong document type for the application resulting in an error from PowerPoint or a possible termination of the PowerPoint program.
| Name | Format | Size |
| SecureZIP® for Windows Version 12 Maintenance Release 3 |
EXE | 19.8MB |
SecureZIP Command Line for Windows Version 12 Maintenance Release 3
This maintenance release is available for users of SecureZIP Command Line for Windows desktop version 12.0 or 12.1 that have purchased a maintenance agreement within the past year. It provides the enhancements and fixes listed below.
Note: If you are updating from version 8.x your existing license key will not work with this update and you will require a new license key from PKWARE. Contact PKWARE Customer Service to obtain a new key for this update.
Product Enhancements:
- New support for improved data compression using PPMd
- New support for improved data compression using LZMA
Product Fixes:
- 3785--Corrected a problem that may result in a loss of data when a disk full error condition is encountered.
- 4645--Added a user message informing that a file is already in use by another user.
- 5607--Support extracting multiple archives to unique directories.
- 5690--Include information on starting disk number in -view=details.
- 5745--Corrected Help information for custom size limits for -span option.
- 7158--Corrected an error reporting conditions when an ZIP file is not created.
- 7230--Expanded the number of archive types supported when using the -archivetype option.
- 7392--Corrected the default value for -times to be "none."
- 7490--Corrected a problem displaying an installation error dialog message.
- 7507--Corrected a problem deleting directories from an archive.
- 7565--Corrected an error condition where a '.' supplied as a command argument is incorrectly treated as a wildcard.
- 7567--Corrected a problem using the -silent=fileheader command.
- 7753--Corrected a problem opening ZIP files having a very large ZIP comment field.
- 7842--Corrected an error condition using the -listfile option that results in incorrect data in a listfile.
- 7843--Corrected a problem when extracting a GZIP file that may result in an incorrect CRC report.
| Name | Format | Size |
| SecureZIP® Command Line Version 12 Maintenance Release 3 | EXE | 4.8MB |
Updates to older versions:
SecureZIP Enterprise and SecureZIP Version 11 Maintenance Release 2
This maintenance release is available for all users of SecureZIP Enterprise and SecureZIP for Windows 11.0 desktop. It provides the enhancements and fixes listed below.
Product Enhancements:
- FIPS 140 support has been added which ensures that SecureZIP will use FIPS 140 validated cryptographic modules for creating secure archives.
- Added support for stronger hashing algorithms; SHA 256, SHA 384 and SHA 512.
Product Fixes:
- 0102--Clarified message reported when deleting a "Favorite" file entry.
- 1984--Corrected a problem when re-installing SecureZIP that caused the software to operate in evaluation mode.
- 1996--Corrected a problem using Favorites that resulted in files added to Favorites list being moved.
- 1997--Corrected a problem that could allow non-archive file types being added to Favorites list.
- 5601--Updated Help information on adding policy certificates
- 5885--Corrected a problem using the diskette Wipe feature if the "Split Size" setting was not set to "auto-detect".
- 5886--Improved formatting of comments having line separators.
- 6215--Corrected a problem of an incorrect date appearing in the file replacement confirmation dialog.
- 6234--Corrected a problem using context menu option to create a PKSFX(r) Self-Extracting ZIP file from an ISO or IMG file.
- 6294--Corrected a problem displaying the "Browse" and "Copy To" menus in the policy editor when running localized for Japan.
- 6313--Corrected a problem that may occur on Windows 2000 when displaying Windows info tip for a zero length ZIP file.
SecureZIP® Command Line Interface Maintenance Release 7
This maintenance release is available for all users of SecureZIP Command Line Interface version 8.4 for Windows desktop. It provides the following fixes:
- 3276--Corrected a problem with file names having trademark (TM) or copyright (c) symbols in the file name.
- 3936--Corrected a problem with embedded archive files in a ZIP file where interim archive file was deleted when extracting.
- 4159--Corrected a line wrapping problem when displaying machine information.
- 5745--Revised program Help documentation to correct size values identified for use with the -span option.
- 5848--Corrected a problem when re-installing the software which may result in an evaluation key being installed on a machine.
- 5871--Improved formatting of log reports.
- 5947--Resolved a problem where an additional prompt to enter a password may appear when encrypting using a contingency key.
- 5948--Corrected a problem with an abnormal program termination occurring when a corrupt policy file is used.
- 6154--Improved memory allocation processes.
- 6217--Corrected a problem when using the -optionchar command that prevented reading archives from stdin and writing archives to stdout
Please read these instructions before installing the maintenance release.
| Name | Format | Size |
| SecureZIP® Enterprise Version 11 Maintenance Release 2 |
EXE | 6.6MB |
| SecureZIP® Version 11 Maintenance Release 2 |
EXE | 11.1MB |
| SecureZIP® Command Line Interface Maintenance Release 7 |
EXE | 4.9MB |
Windows® Desktop Version 8.0 Maintenance Release 2
This maintenance release is available for all users of SecureZIP and PKZIP for Windows 8.0 desktop products. It provides enhancements and corrections listed below:
SecureZIP
- Improved integration with the VeriSign® CA root
- Fixed an isolated case where unsigned files could be inadvertently added to an archive regardless of policy settings.
PKZIP and SecureZIP
- Corrects situations where non-ZIP archives, which do not support encryption, could be created regardless of policy settings.
- Fixed rare cases where filename encrypted archives could not be extracted.
This release also includes enhancements from Maintenance Release 1, listed below.
PKZIP and SecureZIP
- Access to the default user key in the registry.
- Fixed certain situations where the Wizard .dll failed to register.
- Corrected some instances where email integration did not load.
- Access to the VeriSign public directory server.
Please read these instructions before installing the maintenance release.
Windows® Desktop |
||
| Name | Format | Size |
| PKZIP® for Windows® 8.0 Maintenance Release 2 | EXE | 8.3MB |
| PKZIP for Windows CLI Add-On Maintenance Release 1 | EXE | 5.8MB |
| SecureZIP for Windows 8.0 Maintenance Release 2 | EXE | 8.35MB |

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