A widespread Microsoft 365 outage disrupted Outlook, Teams, Copilot and other Microsoft 365 services on Thursday, 12 November 2026, affecting users across 74 countries and territories, according to outage tracking platform Downdetector. The disruption prevented some users from accessing emails, workplace communication tools and cloud-based business applications. Microsoft confirmed problems with parts of its infrastructure and began restoring affected servers, with the outage raising concerns about the reliance of businesses and employees on cloud services for daily operations.
By Thursday evening in South Africa, reports of problems with Microsoft Outlook had climbed to approximately 130,000 on Downdetector.
The company acknowledged that the disruption could affect users in any region and provided updates on its efforts to restore normal service.
Which Microsoft Services Were Affected by the Outage?
The Microsoft outage affected several services used by businesses, organisations and individuals for communication, collaboration and daily operations.
The affected platforms included:
- Microsoft Outlook: Users reported difficulties accessing inboxes and sending or receiving emails.
- Microsoft Teams: The workplace messaging and collaboration platform experienced reported access problems.
- Microsoft 365 Copilot: Microsoft’s artificial intelligence assistant was among the affected services.
- Exchange Online: The cloud based email service experienced disruptions.
- SharePoint Online: The document management and collaboration platform was affected.
- Microsoft Defender XDR: The company’s extended detection and response security service was also listed among the affected products.
The disruption did not necessarily affect every customer using these services.
Microsoft indicated that users in any geographical region could experience problems, suggesting that the incident was not limited to one country or local network.
Microsoft Outlook Outage Reports Reach 130,000
Outlook was among the most visibly affected Microsoft services during Thursday’s disruption.
According to Downdetector, reports of Outlook problems rose to approximately 130,000 shortly after 13:00 Eastern Time, equivalent to 20:00 South African Standard Time.
Some users reported being unable to send or receive emails, while others experienced difficulties accessing their inboxes.
Downdetector recorded reports involving Microsoft services across 74 countries and territories.
However, outage reports represent problems submitted or detected through the monitoring platform. They do not establish the total number of affected Microsoft customers.
The figures nevertheless indicated the geographical reach of the disruption and the difficulties reported by users attempting to access Microsoft’s services.
For businesses that depend on Outlook for customer correspondence, internal communication and administrative work, email interruptions can interfere with routine operations.
What Caused the Microsoft 365 Outage?
Microsoft linked the disruption to problems affecting parts of its server infrastructure.
In an update published on X, the company explained that some servers had become unavailable and were failing automatic health checks.
These checks are used to assess whether infrastructure is functioning as expected.
With some servers unavailable, additional traffic was directed towards infrastructure that remained operational.
Microsoft said this placed increased pressure on the remaining systems.
The company began testing a configuration change intended to redistribute the elevated traffic across its infrastructure.
It also started restarting affected services as part of its recovery efforts.
The information released at that stage described the infrastructure problems and recovery measures, but did not establish a final underlying cause for the outage.
Microsoft Begins Restoring Affected Services
Microsoft reported progress in its efforts to restore service availability.
In its latest update cited in the supplied report, the company said restarting affected infrastructure had produced positive results.
The recovery process involved bringing servers back online in an isolated manner rather than restarting all affected infrastructure simultaneously.
Microsoft was also monitoring system performance to determine whether the restored infrastructure remained stable.
The company indicated that it would expand its recovery measures after verifying the stability of the systems already brought back into operation.
Although these developments suggested progress, the update did not confirm that every affected service had been fully restored.
Users experiencing continued difficulties would therefore need to rely on Microsoft’s subsequent service updates for confirmation of recovery.
Did the Microsoft Outage Affect Other Technology Companies?
The disruption was not limited to Microsoft’s own productivity platforms.
The supplied report indicated that other technology companies, including artificial intelligence firms Anthropic and OpenAI, were also reportedly affected.
These companies use Microsoft infrastructure for some services, illustrating how problems within a major cloud computing provider can extend beyond its own applications.
However, the available information did not specify which services at those companies were affected or how many customers experienced problems.
The incident highlighted the connections between cloud infrastructure providers and the digital services that businesses and consumers use.
A disruption affecting shared infrastructure can have consequences for several platforms, even when those platforms operate under different company names.
Microsoft Experienced Another Major Outage in October
The November disruption followed another major Microsoft incident involving its Azure cloud platform in October 2026.
According to the supplied report, that earlier outage affected productivity services and businesses internationally.
Azure provides cloud computing infrastructure used to support applications and digital services.
The two incidents occurred within consecutive months, although the available information does not establish that they shared the same technical cause.
The latest outage again drew attention to the importance of service availability for organisations that rely on cloud based applications.
What This Means for Gauteng Residents
For Gauteng residents, the Microsoft outage is particularly relevant to people who rely on Microsoft 365 services for employment, education and business activities.
Outlook is commonly used for professional correspondence, while Teams supports online meetings and workplace collaboration.
SharePoint provides access to shared documents, and Copilot assists with certain digital tasks.
When these platforms become unavailable, users may struggle to complete activities that require access to their accounts or shared information.
Small businesses and independent professionals may also face difficulties when essential communication and administrative systems are disrupted.
However, the supplied information does not establish how many users or businesses in Gauteng were directly affected.
Residents experiencing service problems should distinguish between a widespread platform outage and issues involving their own internet connections, devices or accounts.
Frequently Asked Questions
Why Was Microsoft Outlook Not Working?
Microsoft reported that some servers were unavailable and failing automatic health checks. This placed additional pressure on infrastructure that remained operational. A final underlying cause was not confirmed in the supplied update.
Which Microsoft Services Were Affected?
Reportedly affected services included Outlook, Teams, Exchange Online, SharePoint Online, Microsoft 365 Copilot and Microsoft Defender XDR.
How Many Countries Were Affected by the Microsoft Outage?
Downdetector recorded disruption reports involving Microsoft services across 74 countries and territories.
Has Microsoft Fixed the Outage?
Microsoft reported positive results from restarting affected infrastructure and was monitoring system stability. The supplied update did not confirm complete restoration of all affected services.
Was South Africa Affected by the Microsoft Outage?
Microsoft stated that the disruption could affect users in any region. However, the supplied report did not provide a confirmed number of affected South African users.
What to Do if Microsoft Outlook or Teams Is Still Not Working
Users who continue experiencing difficulties with Microsoft services should first establish whether the problem is linked to a wider outage.
Microsoft 365 business customers can consult their organisation’s service health information, while other users can monitor Microsoft’s official service updates.
If Microsoft confirms an ongoing disruption, repeatedly restarting devices or changing account settings may not resolve a server side problem.
Businesses should also consider using alternative communication arrangements when essential email or collaboration services are unavailable.
Once service restoration has been confirmed, users can attempt to reconnect to their applications and check whether delayed messages or outstanding tasks require attention.
Microsoft’s recovery updates remain the most relevant source for determining whether affected services have returned to normal.
