Microsoft plans to retire Exchange Online’s Exchange Web Services (EWS) in October 2026. NinjaOne has proactively prepared for this change in its SaaS Backup solution to ensure continued backup coverage for customer data.
NinjaOne continues to work closely with Microsoft to maintain an easy, reliable backup experience.
This change applies only to Microsoft 365 and Exchange Online. On-premises Exchange Server is not impacted.
Why Microsoft is making this change
Following the Midnight Blizzard attack in 2024, Microsoft prioritized efforts to remove EWS dependencies from its applications and improve security. NinjaOne has already taken steps to maintain service continuity and security and is preparing for any required actions in the future.
NinjaOne’s engineering and product teams have collaborated with Microsoft throughout the planning process. With security as a priority, we are aligning with Microsoft’s modern authentication patterns and least-privilege access during the migration from EWS to Microsoft Graph APIs.
What to expect next
No customer action is required at this time. We have included some common questions and answers below.
Frequently asked questions
Does this affect on-premises Exchange Server?
No. The retirement applies only to Exchange Online, not on-premises Exchange Server.
Will I have access to the same features as in EWS?
NinjaOne plans to migrate all functions from EWS to Microsoft Graph APIs.
Could I be asked to reauthorize apps?
App reauthorization is not required at this time. NinjaOne will provide updates through newsletters and other communications if that changes.
