Microsoft outage disrupts South African offices and institutions
A global Microsoft outage that began on Thursday has disrupted email and other tools used by South African workplaces, and the company has not yet declared it resolved.
A worldwide fault at Microsoft has disrupted workplaces across South Africa since Thursday 12 November, with problems carrying over into Friday, according to IOL.
Outlook was hit hardest, but the trouble spread across the wider Microsoft 365 suite. Teams and the Copilot AI assistant were also affected.
Which services were affected
Technology analyst Arthur Goldstuck said the fault appeared to start in Exchange Online, the system behind Microsoft’s cloud email and calendars. Because many other apps draw on that information, the problem spread.
Copilot users struggled to use its chat functions or to pull information from emails, calendars and documents. In Teams, the trouble was mainly with calendars and meeting scheduling, while calls and ordinary chats mostly kept working. Goldstuck said security and administrative functions were affected too.
Within South Africa, the revenue service SARS said its technical teams were speaking directly to Microsoft. Cape Town’s municipality and the Central University of Technology both warned users about disruptions to services running on Microsoft systems. Downdetector, which tracks outages, showed a jump in complaints on Friday.
What Microsoft says so far
Microsoft first blamed heavy demand on parts of its infrastructure in several regions, which led to connection errors and less server capacity. Its first attempts at recovery did not work as hoped, as some servers stopped responding again once they were put back into use.
Its investigation has pointed to problems with server availability and an overloaded process that sets up secure connections. It is also looking at a recent network configuration change that coincided with the start of the disruption. The company said it knew of no malicious activity behind the incident.
On Friday, Microsoft reported better server stability after it patched an upstream authentication and routing component. It was rolling the fix out to more servers, especially those in regions entering business hours. It has not said the problem is solved and plans to publish a post-incident report once the disruption is contained.
Questions about cost-cutting
Goldstuck noted that the outage followed strong financial results. For the quarter ended 30 September 2026, Microsoft reported revenue of $92.3 billion, up 19%, and net income up 32% to $36.6 billion.
Microsoft has also launched a voluntary buyout programme that about 60,000 employees are eligible for. That is the number who can apply, not the number of jobs lost. The Information has separately reported that its Azure cloud unit was told to look at cutting costs by at least 20%.
Goldstuck said no direct link could be drawn between these moves and the outage. IOL stressed that there is no evidence connecting them to the technical failure.
What it means for businesses and workers
The episode shows how much daily work now depends on a single provider for email, meetings and documents. Goldstuck’s central warning was that customers have very little control when such systems fail. Organisations may want to check how they would keep communicating and working if their main platform goes down, and employees may need to use phone calls or other channels until services are fully restored.
This story is based on reporting by IOL.
