Install, Set Up, & Update

  • Download EZproxy

Download EZproxy 6.3.5

The following table contains links to installation and update instructions for EZproxy on the three supported platforms. The executable files themselves can be downloaded from this table or from within the instructions. Additional information about this release can be found on the EZproxy Release Notes page.

EZproxy Annual Subscription

If you purchased an annual subscription after July 2013, and that subscription is current, you can download the newest version of EZproxy, request a WSKey, and complete the update instructions. If you purchased a license prior to July 2013, you will need to update to the new annual subscription model before downloading the newest version of EZproxy, requesting a WSKey, and updating. To do this, you can request a quote, and you will be provided with a quote and information about how to subscribe. If you are uncertain if your subscription is current, please email

Before Getting Started: OCLC WSKey

After you have confirmed that your subscription is current, you should request an OCLC WSKey to validate your EZproxy instance. If you have not yet obtained a WSKey, you will need to request one before downloading the newest version of EZproxy as keys obtained prior to EZproxy V6.0 will not work with the new versions. For more information, see How to Request a WSKey.

If you obtained a WSKey when you updated to any V6.x, you can use that same WSKey to upgrade to any new release of EZproxy.

Platform Instructions Download Version 6.3.5
Linux Install or Update ezproxy-linux.bin
Solaris 10 (x86) Install or Update ezproxy-solaris.bin
Windows Install or Update ezproxy-windows.exe

Which Version of EZproxy is on my Server? explains how to determine which version of EZproxy is currently installed on your server.

Note: Firefox and Chrome have recently updated their browsers to block access to webservers that have SSL 3 enabled. If you have not upgraded to EZproxy V5.7.44, you still have SSL 3 enabled, and you will receive this error message when trying to connect to site using EZproxy. Upgrading EZproxy to V5.7.44 or V6.x will resolve this problem as SSL 3 is disabled by default. OCLC also recommends that you disable SSL 2 using the Option DisableSSLv2 directive. For more details about this security configuration and other settings, please see EZproxy Security FAQ.

EZproxy V5.7.44

As of August 31, 2017, OCLC no longer supports EZproxy V5.7.44.

If you are not yet ready to upgrade to the current version at this time, OCLC recommends that you upgrade to V5.7.44 for security reasons. You can continue to do so for a limited time by accessing the downloadable binaries and installing and updating instructions available here