M365 - Exchange Online Center

ENow Software's Microsoft Exchange Online blog built by Microsoft MVPs for IT/Sys Admins.

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Microsoft Outages

Service Health Dashboard

Microsoft 365 Admin Center: Understanding Service Health Dashboard

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AmyKelly Petruzzella

If you are experiencing problems with an Office 365 service, the native option is to check Microsoft’s Service Health Dashboard (SHD) in your Microsoft 365 Admin Center to determine whether this is a known issue with a resolution in progress before you call support or spend valuable time troubleshooting. However, the information that is provided through the SHD is only of limited use, as it focuses primarily on the overall service health instead of tenant-specific or user-specific problems.

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TLS Changes in Office 365

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Jaap Wesselius

By now you must have heard that Microsoft is moving away from Basic Authentication and that all client authentications will move to Modern Authentication, and I've blogged about this previously.

Another thing that is happening is Microsoft moving away from TLS 1.0 and 1.1 and only allowing TLS 1.2 connections. This can have an impact on your organization too, so let’s have a look what is going to happen and why.

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Cloud Outage

Cloud Outages Highlight the Need for Monitoring and Planning

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Michael Van Horenbeeck MVP, MCSM

Microsoft has had a bad run lately. First, there was Solorigate, a major supply-chain attack (hack), through which attackers seem to have been able to access and copy (parts of) source code for various Microsoft (cloud) solutions, including Exchange and Intune. Next, at the beginning of March 2021, there was ‘Hafnium’, a severe vulnerability in Exchange Server which left all on-premises installations of Exchange Server vulnerable to exploitation by a web shell, enabling attackers to fairly easily establish foothold into the on-premises environment.

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Office 365 Ducks vs Horses banner

2017 Office 365 Outages Recap: Ducks vs Horses - Office 365 Monitoring

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Paul Robichaux

Reddit, a popular online discussion site, has a running joke: would rather fight a horse-sized duck or 100 duck-sized horses? This bizarre question has surprising relevance to Office 365, because while Microsoft customers often worry about the threat of a widespread large outage (the horse-sized duck), they’re actually getting beat up by a larger number of smaller, less damaging but still annoying outages (the group of duck-sized horses). There are deeper issues here that warrant a closer look in order to understand what the real risks are, and what you can do about them.

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