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Why a Purview DLP policy takes days to activate

Why a Purview DLP policy takes days to activate

Introduction A DLP (Data Loss Prevention) policy that shows "sync complete" in the Purview portal can still take several days before it actually blocks anything. The lag isn't an is

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How to enforce email confidentiality in Exchange

How to enforce email confidentiality in Exchange

Introduction The "Private" sensitivity level in Outlook is a property of the message. In transit, it is represented by the SMTP header "Sensitivity: Private", which Exchange maps to the

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Entra Connect Sync update required before September 30, 2026

Entra Connect Sync update required before September 30, 2026

Introduction All synchronization services in Microsoft Entra Connect Sync will stop working on September 30, 2026 for tenants not on at least version 2.5.79.0. This version, released in

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Teams tightens the rules for onmicrosoft.com tenants

Teams tightens the rules for onmicrosoft.com tenants

Introduction Microsoft is introducing an outbound external messaging limit in Teams for tenants that only use their default onmicrosoft.com domain (MOERA). The rollout begins mid-Se

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GPT-6 Astra available in Copilot

GPT-6 Astra available in Copilot

Introduction GPT-6 Astra joins the frontier models available in Copilot Cowork and Copilot Studio, five days after its launch by OpenAI. The rollout began on September 4, 2026. Che

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OpenAI unveils GPT-6 Astra

OpenAI unveils GPT-6 Astra

Introduction OpenAI announces GPT-6 Astra, presented as its most intelligent and best-aligned model to date. Astra saturates several reference benchmarks : 98% on FrontierMath Tier 4,

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PowerShell Azure module updated to version 16.3.0

PowerShell Azure module updated to version 16.3.0

Introduction Microsoft recently published the new version 16.3.0 of the PowerShell module for Microsoft Azure.Installation You can check the installed module version via the fo

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Claude Fable 5.1 available in Microsoft Foundry

Claude Fable 5.1 available in Microsoft Foundry

Introduction Microsoft expands its Anthropic catalog in Microsoft Foundry with Claude Fable 5.1 and Claude Mythos 5.1, the same day as their launch by Anthropic. As with *Claude O

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Anthropic launches Claude Fable 5.1 and Claude Mythos 5.1

Anthropic launches Claude Fable 5.1 and Claude Mythos 5.1

Introduction Anthropic announces Claude Fable 5.1 and Claude Mythos 5.1, two variants of a single model succeeding Claude Fable 5 and Claude Mythos 5. Beyond the capabilities, the

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Grok 4.6 available in Microsoft Foundry

Grok 4.6 available in Microsoft Foundry

Introduction Grok 4.6, the latest frontier model from SpaceXAI, has been available in public preview in Microsoft Foundry Models since August 26, 2026. Built on SpaceXAI's model famil

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How to launch an email attack simulation with Defender

How to launch an email attack simulation with Defender

Introduction Training your users to recognize a phishing email cannot be limited to an annual awareness session, it is a reflex that is maintained, tested and measured under realistic con

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OpenAI unveils Ultrafast mode for GPT-5.6 Sol in preview

OpenAI unveils Ultrafast mode for GPT-5.6 Sol in preview

Introduction OpenAI announced on August 13, 2026 Ultrafast, a new API service tier that runs GPT-5.6 Sol up to 14 times faster than standard processing. The model is the same, with

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Mistral Agentic Search, the iterative document search

Mistral Agentic Search, the iterative document search

Introduction Mistral AI announced on August 20, 2026 Agentic Search, a document search layer meant to replace the classic RAG in the cases where it fails. The principle changes : inst

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ACMEv2 support for certificates on AudioCodes SBCs

ACMEv2 support for certificates on AudioCodes SBCs

Introduction Renewing the TLS certificate of an SBC is a manual operation everyone knows : generate the request, get it signed, import the certificate in the right TLS Context, restart

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Exchange mailboxes increased to 100GB

Exchange mailboxes increased to 100GB

Introduction On August 19, 2026, the Exchange team detailed a licensing change that went relatively unnoticed ; the Microsoft 365 Business Basic, Business Standard and *Business Premi

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Vishing and synthetic media detection in Teams

Vishing and synthetic media detection in Teams

Introduction The Teams PowerShell 7.9.0 module introduced two parameters that were not the subject of a dedicated announcement : VoicePhishingDetection in the calling policy and *Synthe

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End of the ESU program for Exchange Server 2016/2019

End of the ESU program for Exchange Server 2016/2019

Introduction On August 14, 2026, the Exchange Server team put an end to the speculation : the Extended Security Update (ESU) program for Exchange Server 2016 and *Exchange Server 20

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Reporting security concerns in Teams meetings

Reporting security concerns in Teams meetings

Introduction Microsoft Teams already allows a suspicious message or call to be reported. Reporting now extends to meetings and group calls, with the MC1446794 announcement. The rollout

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Free/Busy sharing moves to Cross-Tenant Access Policy

Free/Busy sharing moves to Cross-Tenant Access Policy

Introduction The Exchange Online team announced the move of cross-tenant sharing of Free/Busy, MailTips and calendars to the Microsoft 365 Cross-Tenant Access Policy. These three scen

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Shieldstral, the multimodal safety classifier from Mistral AI

Shieldstral, the multimodal safety classifier from Mistral AI

Introduction Mistral AI announced on August 4, 2026 Shieldstral, a multimodal safety classifier meant to moderate the inputs and the outputs of a language model. The model sits before a

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