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Comment: Added ILLiad 9.0 server installer
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The ILLiad server installation file, ILLiadServerSetup.exe, is downloaded from Atlas Systems and run on your ILLiad server. This file will install the ILLiad Server and all components needed to run ILLiad. The ILLiad database, services, and other files will install automatically upon running the ILLiad server installation file.


This installation process is for self-hosted server locations only. If you are hosted by OCLC, please contact them to schedule an update. You will need to contact Atlas Systems for credentials to access the installation files listed below. Email: Phone: 1-800-567-7401 ext. 1.  Choose the appropriate version to install below. If this is a new installation, choose the most recent version. If you are migrating a pre-existing system, pick the version that matches your installed version.

Most recent ILLiad version

Previous ILLiad versions

Previous versions

If you do not see the installer version you need or are unsure of which files to install, please contact

Client Installation

Note that the ILLiad Client Installer is available from Prometheus under the ILLiad 9.0 Client Downloads.


If you have a previous version of ILLiad installed and need to update your ILLiad installation to the newest version, see Updating ILLiad to Version 9.0.