Sala de reuniones vacía con mesa larga, sillas y una pizarra de cristal borrada al fondo

Your Teams chats are not in your backup

Microsoft 365 Backup protects three workloads: OneDrive, SharePoint and Exchange Online. Teams chat is none of them. And on the limitations page of one of the most widely deployed third-party tools, individual and group chats appear in the list of what is not backed up. Where a Teams message actually lives according to Microsoft's own documentation, why a retention policy preserves but does not restore, the 21 days it takes a deleted message to reach the SubstrateHolds folder, and the six questions we ask of a company's Microsoft 365 backup before touching anything.

Backup Microsoft 365 Continuity

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Hilera de buzones de correo metálicos alineados junto a un camino de tierra

20 Sep 2026 5 min read

onmicrosoft.com is no longer just an ugly domain: it is the slow lane

On 28 August Microsoft warned (MC1463510) that organisations using only the default domain will face external messaging limits in Teams, with rollout from mid-September. Read on its own it looks like an anti-spam tweak. Read alongside email it is something else: the limit of 100 external recipients per rolling 24 hours for onmicrosoft.com domains finished rolling out to every size band on 1 June 2026, with its own 550 5.7.236 bounce code. The case that catches companies who think they are unaffected, and why fixing it is not buying a domain but changing what people log in with.

Microsoft 365 Exchange Identity

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Pasillo de un depósito de archivo con estanterías móviles cerradas y cajas de documentación

19 Sep 2026 8 min read

Project Online shuts down on 30 September: no licence, no export

Microsoft switches Project Online off on 30 September and PWA sites stop being available. But what decides whether you make it in time is not in the announcement: it is in the service description, which requires a live Plan 3 or Plan 5 subscription in the tenant for ANY interaction. Which means the licence you were going to drop to save money during the migration is the one you need in order to export. There is also a second 120-day clock written somewhere else, the PWA is a SharePoint site and not a calendar, and the destination's published limits explicitly exclude your plan.

Microsoft 365 Data SaaS

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Sala de reuniones vacía con seis portátiles cerrados sobre la mesa y cargadores enredados

31 Aug 2026 5 min read

The warning came from Anthropic, not from your antivirus

On 30 August it emerged that Anthropic was warning Claude users that an infostealer had taken their browser session. Coverage treated it as an AI story. If somebody at your company got that email, it is something else: it is an infection report for a machine in your estate, signed by a supplier that is not yours and spotted through billing. We go through why MFA never even enters the picture, the five critical events that do cut a session in Microsoft Entra and the one missing from that list, the real arithmetic of revocation (1 hour, 28 hours, up to 15 minutes of latency, up to a day for a group change) and where the purpose-built defence against token theft stands today: in preview precisely in the browser, which is where this happened.

AI Cybersecurity Identity

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everyWAN Blog

Your Teams chats are not in your backup

onmicrosoft.com is no longer just an ugly domain: it is the slow lane

Project Online shuts down on 30 September: no licence, no export

The warning came from Anthropic, not from your antivirus

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