Because of growing concerns regarding the impact of the Year 2000 on computer systems running PKWARE's products, we have developed this document to outline the current and planned future status for all of our products.

The following product(s) have no date related functionality:

• PKWARE DATA COMPRESSION LIBRARY (all versions, all platforms)

• PKZIP for Windows (version 2.60 and later, all platforms)
• PKZIP for DOS (versions before 1.10) and OS/2 (versions before 1.09)
• PKZIP 2.50 for DOS
• PKZIP Command Line for OS/2 (version 2.50 and later)
• PKZIP Command Line for Windows 95/NT (version 2.50 and later, all platforms)
• PKZIP Command Line for UNIX (version 2.50 and later, all platforms)
• PKUNZIP for DOS and OS/2 (all versions, including Junior version)
• PKZIP for OpenVMS (all versions)
• PKARC/PKXARC (all versions)
• PKPAK/PKUNPAK (all versions)
• PKLITE (all versions)
• PKZFIND/PKZOOM (all versions)
• PKZIPFIX (all versions)
• PKSFX (all versions, including ZIP2EXE)

• PKZIP for Windows (versions 2.01 - 2.50)
 
• Selecting files by date in a .ZIP file will only accept a range from 1980 through 2009.
• Viewing files in a .ZIP file will only display dates in the form mm/dd/yy.
• Anticipated solution:

Dates entered as a 2 digit value will be interpreted as being in a date range from 1980 through 2079. Dates entered as a 4 digit value will accommodate dates that span more than 100 years. The method of correction will consist of "expanded date fields".
• Scheduled correction date:

PKZIP for Windows Version 2.60 (released December 19, 1997)
• PKZIP for DOS (versions 1.10 – 2.04g) and PKZIP for OS/2 (versions 1.09 - 1.11)
 
• Selecting files to be added to a .ZIP file by date will only accept a range from 1980 through 1999 (-t and -T options).
• Viewing files in a .ZIP file using the default will display dates in the form mm/dd/yy. The four digit year can be viewed using the option to view technical information (-vt).
• Anticipated solution:

Dates entered as a 2 digit value will be interpreted as being in a date range from 1980 through 2079. Dates entered as a 4 digit value will accommodate dates that span more than 100 years. The method of correction will consist of "expanded date fields".
• Scheduled correction date:

PKZIP for DOS, Version 2.50 (released March 30, 1999)
PKZIP Command Line for OS/2, Version 2.50 (released June 2, 1997)

PKZMENU (all versions)
 
• Selecting files to be extracted by date will only accept a range from 1980 through 1999. File dates stored in a .ZIP file, will only be displayed correctly from 1980 through 1999.
• Anticipated solution:

PKZMENU is a discontinued product. No modifications are anticipated.

This Year 2000 Readiness Disclosure refers to the existing PKWARE products only and does not apply to third party products.  PKWARE reserves the right to change any of the information contained herein without notice.  PKWARE makes no representation or warranty respecting the accuracy or reliability of information about non-PKWARE products.  Such information, if any, was provided by the manufacturers of those products and customers are urged to contact the manufacturer directly for further clarification.

Previous Versions/Discontinued Products
Previous versions of products listed on this page and discontinued products may not have been tested for Year 2000 compliance. In accordance with the upgrade policies stated below, all non-discontinued products should be upgraded to the most recently released version in order to ensure Year 2000 compliance.

Upgrades/Updates:
Upgrades to PKWARE products determined to be Year 2000 compliant will be made available through standard PKWARE upgrade policies stated at the time of such product release.  For those products that Year 2000 modifications/fixes are handled through product upgrades, users covered under the appropriate product annual maintenance subscription option will receive the upgrade free of charge. Users not covered under the annual maintenance subscription option will be able to purchase the applicable product upgrade when it becomes commercially available.

Year 2000  Upgrade Policy:
PKWARE is unable to guarantee that any future Upgrade to its products will be only Year 2000 specific.  Any feature enhancements or Year 2000 specific changes will generally be incorporated together in any PKWARE product Upgrade. These will be made available to users based on existing Upgrade or Maintenance Subscription policies stated at the time of such product’s release.  For those users with a current maintenance subscription agreement, there will be no-charge for upgrades (this includes Year 2000 related upgrades). Users not covered under the Maintenance Subscription option will be able to receive the applicable product Upgrade, when it becomes commercially available, through the existing Upgrade Policy stated at that time.

Year 2000 Compliance Definition:
A Year 2000 Compliant product accurately processes date data (including but not limited to: calculating, comparing and sequencing dates), from, into and between the twentieth and twenty-first centuries, the years 1999 and 2000, and leap year calculations, when used in accordance with its product user documentation, and provided all other products used in combination with the product properly exchange data with it.

PKWARE, the PKWARE logo, PKZIP, PKLITE, PKLITE Professional and the PKWARE Data Compression Library are registered trademarks of PKWARE, Inc. PKZFIND and PKZOOM are trademarks of PKWARE, Inc. Trademarks of other companies mentioned appear for identification purposes only and are the property of their respective companies.