Microsoft 365 Throttling Enforcement
Microsoft 365 Throttling Enforcement
Updated today
What is happening?
Microsoft may actively enforce stricter API throttling guidance.
Are you impacted?
For customers using our recommended configurations, you should not expect disruption or negative impact. This is an enforcement update, not a policy change. Our architecture has built-in resilience developed over many years to handle throttling effectively.
This guidance is a foundational principle of our work, and it is precisely why we architected our platform this way from the start.
The Advantage: Built for the Cloud, Not for Workarounds
We believe enterprise data protection shouldn't rely on unauthorized loopholes. Our solution was architected from the ground up as a cloud-native SaaS platform, meaning our approach to Microsoft 365 backup goes far beyond brute-forcing API calls, as per Microsoft’s guidance.
Onboarding, Intelligent API Utilization & Dynamic Load Balancing
The rich dataset enables Druva to make proactive, data-informed decisions that optimize backup performance in real time. Here’s how that intelligence powers smarter backups.
Resilient infrastructure: The initial full backup (onboarding) is the most resource-intensive phase of protecting Microsoft 365. Microsoft responds with HTTP 429 (Too Many Requests) errors, severely throttling the connection and causing initial backups to take weeks or even months. We take a fundamentally different, cloud-native approach to ensure your onboarding is fast, seamless, and throttling-free using Elastic Cloud Infrastructure. Because we utilize a 100% SaaS platform built on AWS, our backend automatically scales compute resources up during your initial onboarding to ingest data concurrently.
Intelligent scheduling: By analyzing peak and off-peak usage windows, our system dynamically schedules backups at optimal times to reduce contention and avoid unnecessary throttling. For instance, more aggressive backup activity can be scheduled during off-business hours to make full use of available API bandwidth.
Optimized API utilization: We continuously track our own apps and Microsoft 365 API consumption to optimize usage in real-time. If a threshold is being approached, our platform intelligently reduces or pauses non-critical operations—such as estimation jobs—to preserve quota for essential backup or restore tasks
Smart Algorithm: To conserve API quota and speed up operations, our Smart Backup feature automatically detects changes. This significantly reduces unnecessary API consumption while still meeting data protection policies.
Intelligent retry and backoff (honoring Retry-After): When Microsoft returns throttling responses, our system backs off and retries using the recommended wait interval where provided. This aligns with Microsoft’s recommended recovery pattern for Graph API usage.
Checkpoint and auto-resume: We checkpoint progress and resume from the last safe point after a throttling pause, reducing restart behavior and lowering repeated API calls.
Visibility for administrators: Where applicable, we provide visibility and notifications when throttling materially impacts job runtimes, so admins understand why completion time changed.
Bottom Line: While the rest of the backup industry is scrambling to update their code and warning customers about longer backup windows, our platform continues to scale effortlessly. Through a combination of intelligent API management, we ensure your critical Microsoft 365 data is fully protected without skipping a beat.