What Would Your Team Do If Microsoft 365 Went Down Tomorrow?
On Friday, 13 November 2026, Outlook, Teams and Microsoft 365 went down around the world.
Downdetector logged more than 130,000 reports for Outlook alone at the peak, and CNA reported disruption lasting more than 12 hours. Microsoft said the cause was an overwhelmed core server process, not a cyberattack.
For most people, that meant a lost day of email and meetings. For some, it meant something worse:
• Teams couldn’t collaborate with colleagues or customers.
• People were locked out of other systems, because their verification codes arrived by Outlook.
• Files that lived only in OneDrive or SharePoint were simply out of reach.
Now imagine that same day is a ransomware attack, and your crisis team needs its playbooks, contact lists and briefing packs. Where are they?
As an enterprise file solution provider, this is the question we think about every day. Not “is the cloud reliable?” but “when it isn’t, who can still get to the files that matter?”
This Keeps Happening
November was not a one-off. Trackers and the press reported several multi-service Microsoft 365 incidents in 2026: nearly 10 hours in January, about 3.5 hours in July, and about 77 hours in August, when one faulty authentication change took out email, chat, files and security tools together.
We’re not singling out Microsoft. As Nicky Choo of Mimecast pointed out on CNA, every major provider, Google and Amazon included, has outages. It is a matter of when, not if.
His advice was simple: don’t put all your eggs in one basket.
Outsourcing The Service Shouldn't Mean Outsourcing Control
What stood out most wasn’t the outage itself. It was how little most organisations could do about it except wait.
When everything runs on one global platform, the most important decisions about your data are made somewhere else:
• When things change. Updates and configuration changes roll out on the provider’s schedule. August’s 77-hour outage began with one of them.
• Who recovers first. In a global incident, you are one tenant among millions. You can’t move to the front of the queue. Even government agencies aren’t spared.
• Who can sign in. If the cloud identity service fails, every door locks at once, including the one your crisis team needs.
• Where data lives, and whose law applies. For government agencies and regulated firms, residency and jurisdiction are obligations, not preferences.
• What you can see. During an incident, you watch the provider’s status page. You don’t see your own logs.
For everyday work, that trade is usually worth it. The cloud brings speed, scale and convenience. But for the data and the people that run an organisation, it deserves a harder look.
Not Cloud VS On-premises, But Both
We’re not arguing for leaving the cloud. We’re arguing against putting everything in one place.
The usual answer, a standby backup for everyone, is hard to run in practice. Nobody uses it until the crisis, so nobody remembers how, and afterwards someone has to reconcile every file that changed.
A simpler approach is to split users by how critical their work is:
• Most staff stay on the mainstream cloud platform. Most roles can tolerate a few hours’ disruption.
• A smaller group works every day on a platform the organisation runs itself. That means leadership, crisis and incident response, security operations, legal, and anyone handling classified or sovereign data.
• The two share no failure points: separate identity, separate MFA, separate servers and storage.
Because that group uses its own platform every day, there is nothing to switch over and nothing to reconcile. When the cloud goes down, they keep working, and they can get critical files to everyone else.
On-premises isn’t immune to failure. It needs proper engineering: two sites and tested recovery. But when it fails, it fails on your terms, separately from everyone else, and your own team can fix it.
Where EasiShare Fits
This is the model EasiShare is built to support. EasiShare gives organisations an enterprise file sharing and collaboration platform that they run and control themselves, so the files and people that matter most are not tied to a single global provider’s identity, servers or schedule.
Your infrastructure, your rules.
Deploy in your own environment, with identity and access under your control.
Independent of your main cloud platform.
Separate identity, MFA and storage mean an outage upstream doesn’t lock out your critical teams.
Data residency you can prove.
Keep sensitive and regulated data where your obligations say it must be.
Visibility into your own logs.
See what is happening on your platform, rather than waiting on a status page.
EasiShare works alongside the cloud tools your teams already use. The aim is resilience, not replacement.
Five Questions For Your Team
1. Is dependence on a single cloud provider recorded as a risk, with an owner?
2. Which people must keep working through any outage or attack?
3. Where do their working files live today?
4. If email is down, how do your staff receive MFA codes and crisis alerts?
5. When did you last rehearse a day without your main cloud platform?
If any answer made you pause, you’re not alone.
Talk To Us
Where do you draw the line between what goes to the cloud and what stays in your own hands?
If you’d like to explore how a self-controlled file platform could protect your critical teams, get in touch with the EasiShare team for a conversation or a demo.
