check before: 2026-01-05
Product:
Purview, Purview Communication Compliance
Platform:
Online, World tenant
Status:
Change type:
Admin impact, Updated message
Links:
Details:
Summary:
Microsoft Purview Communication Compliance is undergoing an infrastructure upgrade from January 5 to June 15, 2026, causing temporary processing delays, intermittent errors, outdated report data, and reduced responsiveness. No data loss will occur. Admins should inform teams; no action is required.
Details:
Updated May 15, 2026: We have updated the timeline. Thank you for your patience.
[Introduction]
Microsoft Purview Communication Compliance is undergoing an infrastructure upgrade from January 5 to June 15, 2026, causing temporary processing delays, intermittent errors, and possible outdated report data. Although this migration is planned outside of normal business hours, some production clusters may experience higher loads, potentially causing brief delays in downstream processing. Brief delays in processing may occur during this migration, but no data will be lost.
No action is required, but admins should inform teams about these short-term impacts.
[When this will happen:]
This migration will begin January 5, 2026, and end June 15, 2026 (previously May 15).
Change Category:
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Scope:
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Release Phase:
Created:
2026-01-07
updated:
2026-05-16
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**
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Direct effects for Operations**
Processing Delays
Temporary delays in processing may lead to slower updates to policy insights and aggregated counts, affecting decision-making.
- roles: Compliance Admin, IT Manager
- references: https://learn.microsoft.com/purview/communication-compliance
Intermittent Errors
Intermittent errors when reviewing flagged messages can disrupt the workflow of compliance reviews, leading to potential compliance risks.
- roles: Compliance Admin, Compliance Officer
- references: https://learn.microsoft.com/purview/communication-compliance
Outdated Report Data
Users may encounter outdated report data, which can mislead compliance assessments and reporting accuracy.
- roles: Compliance Admin, Data Analyst
- references: https://learn.microsoft.com/purview/communication-compliance
Configutation Options**
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Opportunities**
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Potentional Risks**
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Data Protection**
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IT Security**
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Hypothetical Work Council Statement**
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DPIA Draft**
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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 |
| 2026-05-16 | MC Last Updated | 04/30/2026 19:41:15 | 2026-05-15T18:26:26Z |
| 2026-05-16 | MC Messages | Updated April 30, 2026: We have updated the timing of this change below. Thank you for your patience.
[Introduction] Microsoft Purview Communication Compliance is undergoing an infrastructure upgrade from January 5 to April 30, 2026, causing temporary processing delays, intermittent errors, and possible outdated report data. Although this migration is planned outside of normal business hours, some production clusters may experience higher loads, potentially causing brief delays in downstream processing. Brief delays in processing may occur during this migration, but no data will be lost. No action is required, but admins should inform teams about these short-term impacts. [When this will happen:] This migration will begin January 5, 2026, and end May 15, 2026 (previously April 30). | Updated May 15, 2026: We have updated the timeline. Thank you for your patience.
[Introduction] Microsoft Purview Communication Compliance is undergoing an infrastructure upgrade from January 5 to June 15, 2026, causing temporary processing delays, intermittent errors, and possible outdated report data. Although this migration is planned outside of normal business hours, some production clusters may experience higher loads, potentially causing brief delays in downstream processing. Brief delays in processing may occur during this migration, but no data will be lost. No action is required, but admins should inform teams about these short-term impacts. [When this will happen:] This migration will begin January 5, 2026, and end June 15, 2026 (previously May 15). |
| 2026-05-16 | MC End Time | 06/22/2026 09:00:00 | 2026-07-20T09:00:00Z |
| 2026-05-16 | MC Summary | Microsoft Purview Communication Compliance is undergoing an infrastructure upgrade from January 5 to May 15, 2026, causing temporary processing delays, intermittent errors, and possible outdated report data. No data loss will occur. Admins should inform teams, but no action is required. | Microsoft Purview Communication Compliance is undergoing an infrastructure upgrade from January 5 to June 15, 2026, causing temporary processing delays, intermittent errors, outdated report data, and reduced responsiveness. No data loss will occur. Admins should inform teams; no action is required. |
| 2026-05-01 | MC Last Updated | 04/14/2026 20:52:41 | 2026-04-30T19:41:15Z |
| 2026-05-01 | MC Messages | Updated April 14, 2026: We have updated the timing of this change below. Thank you for your patience.
[Introduction] Microsoft Purview Communication Compliance is undergoing an infrastructure upgrade from January 5 to April 30, 2026, causing temporary processing delays, intermittent errors, and possible outdated report data. Although this migration is planned outside of normal business hours, some production clusters may experience higher loads, potentially causing brief delays in downstream processing. Brief delays in processing may occur during this migration, but no data will be lost. No action is required, but admins should inform teams about these short-term impacts. [When this will happen:] This migration will begin January 5, 2026, and end April 30, 2026 (previously April 15). | Updated April 30, 2026: We have updated the timing of this change below. Thank you for your patience.
[Introduction] Microsoft Purview Communication Compliance is undergoing an infrastructure upgrade from January 5 to April 30, 2026, causing temporary processing delays, intermittent errors, and possible outdated report data. Although this migration is planned outside of normal business hours, some production clusters may experience higher loads, potentially causing brief delays in downstream processing. Brief delays in processing may occur during this migration, but no data will be lost. No action is required, but admins should inform teams about these short-term impacts. [When this will happen:] This migration will begin January 5, 2026, and end May 15, 2026 (previously April 30). |
| 2026-05-01 | MC End Time | 06/01/2026 09:00:00 | 2026-06-22T09:00:00Z |
| 2026-05-01 | MC Summary | Microsoft Purview Communication Compliance is undergoing an infrastructure upgrade from January 5 to April 30, 2026, causing temporary processing delays, intermittent errors, outdated report data, and reduced responsiveness. No data loss will occur. Admins should inform teams; no action is required. | Microsoft Purview Communication Compliance is undergoing an infrastructure upgrade from January 5 to May 15, 2026, causing temporary processing delays, intermittent errors, and possible outdated report data. No data loss will occur. Admins should inform teams, but no action is required. |
| 2026-04-15 | MC Messages | Updated March 4, 2026: We have updated the timing of this change below. Thank you for your patience.
[Introduction] Microsoft Purview Communication Compliance is undergoing a scheduled infrastructure upgrade. Although this migration is planned outside of normal business hours, some production clusters may experience higher loads, potentially causing brief delays in downstream processing. Brief delays in processing may occur during this migration, but no data will be lost. [When this will happen:] This migration will begin January 5, 2026, and end April 15, 2026 (Previously February 28, 2026). | Updated April 14, 2026: We have updated the timing of this change below. Thank you for your patience.
[Introduction] Microsoft Purview Communication Compliance is undergoing an infrastructure upgrade from January 5 to April 30, 2026, causing temporary processing delays, intermittent errors, and possible outdated report data. Although this migration is planned outside of normal business hours, some production clusters may experience higher loads, potentially causing brief delays in downstream processing. Brief delays in processing may occur during this migration, but no data will be lost. No action is required, but admins should inform teams about these short-term impacts. [When this will happen:] This migration will begin January 5, 2026, and end April 30, 2026 (previously April 15). |
| 2026-04-15 | MC How Affect | Who is affected:
Admins managing Microsoft Purview Communication Compliance policies and review workflows. What will happen: Updates to policy insights and aggregated counts (New pending today, Total pending, Total resolved) may occur at a slower pace than usual. Intermittent errors may occur when reviewing flagged messages. Brief delays may be observed between receiving an alert notification and accessing messages for review. Certain report views may display outdated data until backlog processing is complete. Some export functions, such as exporting reports and files, might be temporarily unavailable. No data loss will occur-only temporary slowdowns in processing times. This maintenance is scheduled outside of normal business hours to minimize impact. However, global organizations may experience some overlap with active hours. | Who is affected:
Admins managing Microsoft Purview Communication Compliance policies and review workflows. What will happen: Updates to policy insights and aggregated counts (New pending today, Total pending, Total resolved) may occur at a slower pace than usual. Intermittent errors may occur when reviewing flagged messages. Brief delays may be observed between receiving an alert notification and accessing messages for review. Certain report views may display outdated data until backlog processing is complete. Some export functions, such as exporting reports and files, might be temporarily unavailable. No data loss will occur-only temporary slowdowns in processing times. Users may experience reduced responsiveness and intermittent instability in the experience. This maintenance is scheduled outside of normal business hours to minimize impact. However, global organizations may experience some overlap with active hours. |
| 2026-04-15 | MC Last Updated | 03/06/2026 18:07:13 | 2026-04-14T20:52:41Z |
| 2026-04-15 | MC End Time | 05/15/2026 09:00:00 | 2026-06-01T09:00:00Z |
| 2026-04-15 | MC Summary | Microsoft Purview Communication Compliance is undergoing an infrastructure upgrade from January 5 to April 15, 2026, causing temporary processing delays, intermittent errors, and possible outdated report data. No data loss will occur. No action is required, but admins should inform teams about these short-term impacts. | Microsoft Purview Communication Compliance is undergoing an infrastructure upgrade from January 5 to April 30, 2026, causing temporary processing delays, intermittent errors, outdated report data, and reduced responsiveness. No data loss will occur. Admins should inform teams; no action is required. |
| 2026-03-17 | MC MessageTagNames | Admin impact | Updated message, Admin impact |
| 2026-03-17 | MC Summary | Microsoft Purview Communication Compliance will undergo infrastructure migration from January 5 to February 28, 2026, causing temporary delays, intermittent errors, and slower updates in policy insights and reports. No data loss will occur. No action is required, but admins should inform teams of possible short-term slowdowns. | Microsoft Purview Communication Compliance is undergoing an infrastructure upgrade from January 5 to April 15, 2026, causing temporary processing delays, intermittent errors, and possible outdated report data. No data loss will occur. No action is required, but admins should inform teams about these short-term impacts. |
| 2026-03-17 | MC Last Updated | 01/06/2026 23:48:36 | 2026-03-06T18:07:13Z |
| 2026-03-17 | MC Messages | [Introduction]
Microsoft Purview Communication Compliance is undergoing a scheduled infrastructure upgrade. Although this migration is planned outside of normal business hours, some production clusters may experience higher loads, potentially causing brief delays in downstream processing. Brief delays in processing may occur during this migration, but no data will be lost. [When this will happen:] This migration will begin January 5, 2026, and end February 28, 2026. | Updated March 4, 2026: We have updated the timing of this change below. Thank you for your patience.
[Introduction] Microsoft Purview Communication Compliance is undergoing a scheduled infrastructure upgrade. Although this migration is planned outside of normal business hours, some production clusters may experience higher loads, potentially causing brief delays in downstream processing. Brief delays in processing may occur during this migration, but no data will be lost. [When this will happen:] This migration will begin January 5, 2026, and end April 15, 2026 (Previously February 28, 2026). |
| 2026-03-17 | MC Title | Purview Communication Compliance: Temporary delays in processing due to planned infrastructure migration | (Updated) Purview Communication Compliance: Temporary delays in processing due to planned infrastructure migration |
| 2026-03-17 | MC End Time | 04/01/2026 09:00:00 | 2026-05-15T09:00:00Z |
Last updated 1 day ago ago
