Question 1

What is the EOL Risk Score for Dynamics 365 Customer Engagement (on-premises) 9.1?

Accepted Answer

Dynamics 365 Customer Engagement (on-premises) 9.1 has an EOL Risk Score™ of 10 out of 100, placing it in the Low risk band. The score is calculated from four factors: EOL Recency (0/40), Attack Surface (10/30), CISA KEV Exposure (0/20), and Extended Support Availability (0/10).

Question 2

Is Dynamics 365 Customer Engagement (on-premises) 9.1 still supported?

Accepted Answer

Dynamics 365 Customer Engagement (on-premises) 9.1 is currently supported. End of life is scheduled for January 9, 2031. Plan your migration before that date to avoid security risk.

Question 3

When does Dynamics 365 Customer Engagement (on-premises) 9.1 reach end of life?

Accepted Answer

Dynamics 365 Customer Engagement (on-premises) 9.1 reached (or will reach) end of life on January 9, 2031. After this date, no security patches or bug fixes are issued by the vendor.

Question 4

What are the security risks of running Dynamics 365 Customer Engagement (on-premises) 9.1 after end of life?

Accepted Answer

After end of life, Dynamics 365 Customer Engagement (on-premises) 9.1 no longer receives security patches. Any newly discovered CVEs remain unpatched indefinitely. Organizations running EOL software also face compliance violations under SOC 2, PCI DSS, HIPAA, and ISO 27001, which require use of supported software versions.