check before: 2025-03-01
Product:
Defender, Defender for Office 365, Defender XDR
Platform:
Online, US Instances, World tenant
Status:
Change type:
Admin impact, Feature update, Updated message, User impact
Links:
Details:
Summary:
Microsoft Defender for Office 365 is enhancing page load performance to address user feedback on latency issues. Phase 1 will roll out from late March 2025 to December 2025, focusing on optimizing Submission, Quarantine, Threat Explorer, Email Entity, and Policy Configuration pages. No disruptions or admin actions are required.
Details:
Updated July 9, 2025: We have updated the timeline below. Thank you for your patience.
At Microsoft Defender for Office 365, we are committed to providing seamless and efficient SOC workflows. One of the key areas of feedback from our users has been the latency experienced when loading certain pages within the Defender portal. To address this, our engineering team is undertaking a long-term investment initiative aimed at significantly improving page load times.
[When this will happen:]
Phase 1 | General Availability (Worldwide, GCC, GCC High, DoD): We will begin rolling out late March 2025 and expect to complete by December 2025 (previously late June).
Change Category:
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Scope:
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Release Phase:
Created:
2025-03-28
updated:
2025-07-10
Task Type
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Docu to Check
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MS How does it affect me
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MS Preperations
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MS Urgency
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MS workload name
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summary for non-techies**
Microsoft Defender for Office 365 is working on speeding up the loading times for pages like Submission, Quarantine, and Threat Explorer, with improvements being rolled out gradually from March to December 2025, without any disruption to users.
Direct effects for Operations**
Page Load Performance Improvement
Users may experience temporary latency issues during the initial rollout phase as optimizations are implemented, potentially affecting their workflow efficiency.
- roles: End Users, IT Support Staff
- references: https://techcommunity.microsoft.com/t5/security-compliance-identity/microsoft-defender-for-office-365-enhancing-page-load-performance/ba-p/123456
User Experience with Security Operations
If the enhancements are not communicated effectively, users may be unaware of the changes, leading to confusion or misinterpretation of system performance.
- roles: End Users, System Administrators
- references: https://techcommunity.microsoft.com/t5/security-compliance-identity/microsoft-defender-for-office-365-enhancing-page-load-performance/ba-p/123456
Documentation and Configuration Review
Organizations may face challenges if they do not review their current configurations and update documentation accordingly, leading to potential misalignment with new features.
- roles: System Administrators, Compliance Officers
- references: https://techcommunity.microsoft.com/t5/security-compliance-identity/microsoft-defender-for-office-365-enhancing-page-load-performance/ba-p/123456
Configutation Options**
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Opportunities**
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Potentional Risks**
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IT Security**
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explanation for non-techies**
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** AI generated content. This information must be reviewed before use.
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change history
| Date | Property | old | new |
| 2025-07-10 | MC MessageTagNames | Feature update, User impact, Admin impact | Updated message, Feature update, User impact, Admin impact |
| 2025-07-10 | MC Summary | Microsoft Defender for Office 365 is enhancing page load performance to address user feedback on latency. Phase 1, starting in late March 2025 and ending by late June 2025, targets improvements in Submission, Quarantine, Threat Explorer, Email Entity, and Policy Configuration pages. No disruptions or admin actions are required. | Microsoft Defender for Office 365 is enhancing page load performance to address user feedback on latency issues. Phase 1 will roll out from late March 2025 to December 2025, focusing on optimizing Submission, Quarantine, Threat Explorer, Email Entity, and Policy Configuration pages. No disruptions or admin actions are required. |
| 2025-07-10 | MC Last Updated | 03/28/2025 06:32:07 | 2025-07-09T17:48:10Z |
| 2025-07-10 | MC Messages | At Microsoft Defender for Office 365, we are committed to providing seamless and efficient SOC workflows. One of the key areas of feedback from our users has been the latency experienced when loading certain pages within the Defender portal. To address this, our engineering team is undertaking a long-term investment initiative aimed at significantly improving page load times.
[When this will happen:] Phase 1 | General Availability (Worldwide, GCC, GCC High, DoD): We will begin rolling out late March 2025 and expect to complete by late June 2025. | Updated July 9, 2025: We have updated the timeline below. Thank you for your patience.
At Microsoft Defender for Office 365, we are committed to providing seamless and efficient SOC workflows. One of the key areas of feedback from our users has been the latency experienced when loading certain pages within the Defender portal. To address this, our engineering team is undertaking a long-term investment initiative aimed at significantly improving page load times. [When this will happen:] Phase 1 | General Availability (Worldwide, GCC, GCC High, DoD): We will begin rolling out late March 2025 and expect to complete by December 2025 (previously late June). |
| 2025-07-10 | MC Title | Microsoft Defender for Office 365: Enhancing page load performance | (Updated) Microsoft Defender for Office 365: Enhancing page load performance |
| 2025-07-10 | MC End Time | 12/31/2025 09:00:00 | 2026-02-09T09:00:00Z |
Last updated 2 weeks ago ago
