Friday the 13th: Outlook got the memo. Does your business have a backup plan?

Friday the 13th. Outlook apparently got the memo. 😂

AI promises to save us hours every week. Meanwhile, we’re wondering whether we’ll be able to open Outlook before Christmas. The joke wears thin when customers are waiting, staff cannot reach their work and the afternoon’s appointments are buried in a mailbox.

The Microsoft service disruption affecting Outlook and other Microsoft 365 services on Friday 13 November 2026 brings that dependency into focus for Australian businesses. Microsoft’s incident references are EX1550543 and MO1550821. Check Microsoft’s service health page and your administrator’s service health notices for updates relevant to your organisation. This article is about preparing for disruption; it is not a live recovery-status report.

The cost is bigger than a monthly software subscription

Consider a business with ten employees unable to do their usual billable work for five hours. At an illustrative billing rate of $200 an hour, 10 × 5 × $200 = $10,000 of billable capacity at risk. That is not automatically $10,000 in lost revenue or profit: some work can be caught up, some staff can switch tasks, and actual utilisation varies. It does show why a cheap subscription can sit underneath an expensive interruption.

There is also the work that does not appear on that calculation: rescheduling jobs, reassuring customers, checking whether a quote arrived and clearing the backlog once service returns. For a small Townsville business, those tasks often fall to the same person who is trying to keep the business running.

Give staff a way to communicate outside the affected platform

If email and team chat depend on the same provider or sign-in service, switching between them may not help. Choose an approved fallback before an incident: a mobile call tree, SMS for short operational updates, or a separate messaging service appropriate for your organisation. Test that it works without the usual work account.

• Keep a current staff contact list available to authorised people outside the affected cloud service, with access and storage controls appropriate to those personal details.
• Name the person who will coordinate the response, plus a deputy. Give staff a clear time for the next update, even if there is no recovery estimate.
• Agree which jobs can continue offline and where the minimum necessary instructions or work lists will be kept securely. Practise accessing them before an outage.
• Keep confidential customer files out of personal email and improvised group chats. Use the fallback to coordinate work, with approved arrangements for any sensitive information.

Customers need a working way to reach you too

A customer who cannot get a reply does not know whether your email is down or you have forgotten them. Prepare a short website notice and a phone message. Make sure someone can update the website without signing in through the affected service, and check whether your business phone system has the same dependency. Keep a tested mobile number available if it does.

A useful message is: We are experiencing an email service disruption. For urgent enquiries, please call our usual published phone number. We will update this notice by [time]. Replace the placeholder and confirm that number works before posting. Promise another update, rather than guessing when a provider will finish repairs.

Record urgent calls and commitments in an agreed place so they can be entered into the normal system later. When service returns, check delayed messages and queued work before resending everything: duplicate orders, invoices and bookings create their own problems.

Backups and a second internet connection solve different problems

A backup helps recover data; it does not necessarily provide a working mailbox during a provider outage. A 4G or 5G fallback can help when your local internet connection fails, but it cannot restore a cloud service that is unavailable. Likewise, a second email address is only useful if staff can access it independently and customers already know how to verify it.

Start by listing the systems needed to answer a customer, deliver a job and receive payment. For each one, write down who to call, what can continue manually and how you will bring records back together afterwards. Then run a short exercise with email unavailable. The gaps become much easier to see.

Make the next interruption less disruptive

Townsville Computer Man’s business IT support can help investigate local device and network problems and work through practical fallback arrangements. For a wider review of cloud access, vendor dependencies and organisational risk, Suburban Secure handles that advisory work.

You cannot stop every provider outage. You can decide how staff will communicate, how customers will reach you and what useful work can continue while you wait.

• Microsoft service health — current provider updates
• Business IT support in Townsville
• Build a free cyber incident response plan with Suburban Secure