Almost every version of Microsoft Dynamics AX has reached its end-of-life and is no longer supported according to the Microsoft Support Lifecycle.
If you require continuous support for your Dynamics AX but are not yet prepared to upgrade to Microsoft Dynamics 365, we recommend undergoing a Microsoft Dynamics AX Support review. This complimentary Dynamics AX Support review is designed to extend the longevity of your Dynamics AX installation by offering support options for 12, 24, or 36 months. Concurrently, Ascent Innovations Support will assist your team in getting prepared for a migration to Dynamics 365 in the cloud.
Ascent Innovations provides international 24/7 Dynamics support for over 15,000 users across all versions, including Axapta 4.0, Dynamics AX 2009, Dynamics AX 2012, AX 2012 R2, AX 2012 R3, and Dynamics 365. Ascent Innovations Support also aids in managing customized Dynamics AX solutions.
Let the Microsoft Dynamics architects at Ascent Innovations assist your business in creating a support plan that enables you to efficiently run Dynamics AX while staying prepared for a migration to Dynamics 365 when the timing aligns with your business needs. Microsoft Dynamics AX users, like yourself, have benefited from support assessments to enhance performance, improve uptime, and address system concerns."

https://www.ascent365.com/blog..../find-the-right-dyna