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A newer version of this software is available, which includes functional and security updates. Customers should click here to update to the latest version.

Users should upgrade to the latest version of the Quartus Prime Design Software. The selected version does not include the latest functional and security updates. If you must use this version of software, follow the technical recommendations to help improve security. For critical support requests, please contact our support team.

Quartus Prime Pro Edition Design Software, Version 20.4 subject to removal from the web when support for all devices in this release are available in a newer version, or all devices supported by this version are obsolete. If you would like to receive customer notifications by e-mail, please subscribe to our subscribe to our customer notification mailing list.

The Quartus Prime Pro Edition Software version 20.4 has been updated to build #72. The continued use of the first release, build #64, could cause inaccurate results. strongly recommends all customers that have the previous 20.4 build #64 update to this latest build. No support or patches will be available for build #64; you must install build #72 for any support or future patches. To determine which build you have installed, please open Quartus Prime Pro Edition Software and select Help -> About Quartus Prime.

To find software versions that support specific device families:
   • Refer to the Device Support List
   • Use the Software Selector


Critical Issues and Patches for the Quartus Prime Pro Edition Software, Version 20.4.
Knowledge Base: Search for Errata. Also see Critical Issues and Patches.
Problems and Answers on specific IP or Products.

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