The EOVM dates for Network OS (NOS) v7.4.0(x) and previous releases have expired. The End of Version Maintenance (EOVM) is the date that Extreme no longer supports software maintenance for a particular major software release train. Software defect fixes will only be included in NOS 7.4.1(x) patch releases and users will be expected to upgrade.
Extreme recommends upgrading to the latest 7.4.1(x) patch release to be on a supported release within the EOVM date. EOVM dates are found on the Extreme Portal here: https://extremeportal.force.com/ExtrProductDetail?id=01t34000004LQKiAAO.
For more information, check out the full field notice here: https://extremeportal.force.com/ExtrArticleDetail?an=000096629
