Release Notes

Reflection ZFE version 2.1.1 released April 2017. These release notes list the features and known issues in this release and information on how to obtain the product. Reflection ZFE provides terminal emulation for 3270, 5250, VT, and UTS host types, while requiring only an HTML 5-capable browser.

What’s New

Making Connections

To complete a successful installation, make sure that you have taken care of these common connection issues:

Is MSS configured for HTTPS?

Connect to the system where the Administrative Server is installed and log in to the Administrative Server. In the Administrative WebStation, open the Security Setup section and note the protocol selection.

Verify that both MSS and Reflection ZFE are using trusted certificates.

If you are not using trusted certificates, have you configured Reflection ZFE to run using HTTP?

Are your connection properties configured properly?

In the unlikely event that you have to verify connection information, the file for both the management component and the Reflection ZFE session server contains the connection properties needed to make the Reflection ZFE to MSS connection as well as the browser to Reflection ZFE connection.

Other connection issues

See Technical Note 2838, Troubleshooting Reflection ZFE Connections for more information on other rare connection issues.

Known Issues

Technical Support is always available to help you with any issues you may encounter in Reflection ZFE.

NOTE:Reflection ZFE terminal emulation uses WebSocket technology for communication between a web browser and the Reflection ZFE session server. WebSocket is a feature of the HTML5 specification, and is supported by current releases of all widely available web browser software. If your organization has modified router or network configurations to disable WebSocket communications on your network, you cannot use Reflection ZFE terminal sessions. For more information, see WebSocket.

  • Recommended browsers

    It is highly recommended that Reflection ZFE users use Google Chrome or Mozilla Firefox. While Reflection ZFE supports Microsoft Internet Explorer (IE) 10+, there are known performance issues with IE's JavaScript engine that may negatively affect the end user experience with Reflection ZFE.

    If you are using an older version of Internet Explorer, you may see these issues:

    There are remedies to both these issues, however the easiest solution is to use a different browser.

  • Key mapping

    Certain keys on a numeric keypad and some browser-specific keys cannot be mapped. For example, in Chrome, Ctrl+n and Ctrl+w cannot be mapped.

  • Some anti-virus software blocks WebSockets

    Reflection ZFE requires a WebSocket connection between the web browser and the server. Antivirus software might prevent WebSocket connections, especially when ports 80 or 8080 are used. If you think your antivirus software may be preventing WebSockets, first try a different port. For troubleshooting, see

  • Field outline in a 3270 session

    The 3270 attributes for field outlines are not fully supported. Reflection ZFE currently supports underline and overline; however, left vertical line, right vertical line, and combinations of the four line types are not yet supported.

  • SSL 3.0 is disabled by default

    For security reasons, enabling SSL 3.0 is not recommended. However, for hosts that absolutely require SSL 3.0, follow these steps to enable the protocol:

    1. Stop the applications or services that will be using SSL 3.0.

    2. Open <install-dir>/jre/lib/security/ in a text editor.

    3. Remove or comment out the line jdk.tls.disabledAlgorithms=SSLv3.

  • Issues specific to VT hosts



    Performance issues

    • Heavy text output, such as form “Is-IR” may cause slow performance

    • Scrolling regions may appear slow or choppy

    • Cursor movememnt may be slow or choppy

    • Internet Explorer is particularly slow, and performance degrades further when used for rows and columns.

    Character sets

    • Graphical characters and some character sets are not supported.

    • Some non-English characters may cause the terminal display to freeze.

    Other VT issues

    • Insert/delete column (DECIC, DECDC) may fail.

    • VT400 will not recognize DECSCL.

    • In rare occasions, using VT102-

Obtaining the Product

After you purchase Reflection ZFE, the product is available to download from Attachmate Downloads. For more information on using the Download Library, see Technical Note 0200.For information about purchasing or evaluating Reflection ZFE, please email

Installing the Product

Read the System Requirements and Installation Notes for specific system and installation requirements and helpful tips.

Contacting Micro Focus

For specific product issues, contact Micro Focus Support.

Additional technical information or advice is available from several sources:

  • Product documentation, Knowledge Base articles and videos - see

  • The Micro Focus Community pages – see

Legal Notice

Copyright © Attachmate Corporation. All Rights Reserved.

This software is provided "as is" without warranty of any kind. Micro Focus disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Micro Focus or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Micro Focus or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.