License Expiration Date¶
Expiration Date¶
In Chemaxon License Management, a license is purchased for a given period, e.g. one year. The end of the period is tracked by the "expiration date" of the license. For example if a customer purchases an annual license in 2026 May, the expiration date of that license will be '2027-05-31'. This means, customer can use Chemaxon software until '2027-05-31 23:59:59' (if they don't renew sooner).
Support Expiration Date¶
Support Expiration Date means the customer eligible for any new versions, released before that date. So if the Support Expiration Date is 2026-05-31, customer is eligable for version update released in 2026 May, but they aren't for a version released in 2026 June. These two dates are usually the same, meaning customer is eligable for software updates during the license validity period.
In case of Perpetual Renewal licenses, customer already has a valid license, with Expiration Date is "Never". In these cases, customer purchases right for newer versions, and for basic support. In case of Perpetual Renewal, customer is eligible for versions released before that date, but they will be eligable to use those version even after Support Expiration Date is over.
Perpetual License
Chemaxon doesn't issue Perpetual license anymore. Customers, having perpetual licenses need to purchase Perpetual Renewal licenses.
'Expiration Date' and 'Parent Expiration Date' in case of license key¶
In case of using license key instead of license file, remote-license.xml temporary file is generated to filesystem. This file serves a cache of the response of license server, representing the licenses, eligable the customer relating to that specific key. In this xml - confusingly - 'Expiration Date' doesn't mean the date of the expiration date of the purchased license itself, but the validity of the temporary file.
Expiring remote-license.xml is not an issue, Chemaxon software fetches a fresh one from license server, with extended Expiration Date. Re-fetching fresh remote-licenses is happening in the background, until the "real" expiration date is exceeded.