Frequently Asked Questions – System Requirements

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Frequently Asked Questions – System Requirements


In order to provide the best possible HeinOnline research experience, the information technology staff at William S. Hein & Co., Inc. has dedicated considerable time and resources to develop a system that is both fault tolerant and robust. To prevent system failures and to ensure seamless database access during periods of server downtime, HeinOnline uses a multitude of technologies which include hardware and internet connection redundancies, DoS protection, load balancing, and automatic failovers among multiple servers. In order to ensure that HeinOnline access is not interrupted due to routine server maintenance or unexpected failovers, it is vital that all customers configure their systems with the proper HeinOnline domain name and standard DNS practices. Proper configuration will ensure that these performance enhancements and redundancies are not circumvented.

At this time, we recommend and officially support access to HeinOnline via domain name (  Locking a proxy server or web portal onto a specific IP address circumvents many of the systems we have put in place and could potentially cause interruptions in HeinOnline access.  Caching should also be disabled on any proxy server utilized to access HeinOnline.  We publish a short TTL on our DNS A-Records and it is important not to hold onto these records for longer than the published 15 seconds.

While we do not recommend utilizing IP addresses in proxy configurations, the following is provided for informational purposes only:

HeinOnline current public-facing IP addresses:

HeinOnline supporting public-facing IP addresses:

If you have any questions, please contact our support team at or (800) 277-6995.

What are the system requirements for using HeinOnline?

  • 512M RAM minimum
  • Screen resolution of 1024 x 768 is recommended
  • Internet access is required and a dedicated Internet connection is recommended

What are the system requirements for printing in HeinOnline?

PDF printing requires Adobe Acrobat Reader, Version 9.0 or later or a comparable PDF reader.

If you do not already have Adobe Acrobat Reader installed on your computer, Download Adobe Reader and install it
on your workstation.

What browsers are supported in HeinOnline?

HeinOnline supports all major browsers, including Mozilla Firefox, Internet Explorer, Safari, Opera, and Google Chrome.  We recommend always installing the latest browser update if your computer so allows.  Generally speaking, when the developer of the browser stops supporting a version of their browser, we stop supporting it as well.

What version of Adobe Reader is compatible with HeinOnline?

For optimum performance, we recommend the most current version of Adobe Reader, which can be downloaded here.

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