Global Microsoft outage forces Bexar County workers to pause
An estimated 450 million users were affected as email and chat services went silent from Thursday through Friday.
By James Foster ·

Office workers in Bexar County and around the world found their digital tools silent on Thursday. The disruption hit Microsoft 365 services, including Outlook and Teams. For many employees, the lack of notifications meant a temporary halt to standard communication tasks. The outage lasted from Thursday through Friday, November 13.
The issue began on Thursday and persisted into Friday. Microsoft has not yet identified the root cause of the failure. Experts suggest a configuration change may have triggered the problem. This pattern resembles a similar incident in October 2025 involving Azure Front Door. The tech giant markets Microsoft 365 to roughly 450 million paid customers. All of those accounts were potentially impacted during the downtime.
Companies that rely on Microsoft for email, document storage, and meetings faced operational challenges. Hervé Lambert, Head of Global Consumer Operations at Panda Security, noted that internal infrastructure problems can cause severe operational consequences. He stated that concentrating services among a few providers creates significant risks for business continuity. Many organizations use the same platform to manage employee coordination and client communication.
Lambert advised businesses to prepare for scenarios where technology fails. He emphasized that cyber resilience involves reducing impact and maintaining essential operations. Companies should not assume any single provider guarantees absolute service availability. Instead, they should evaluate their dependencies and test backup plans for critical services.
Rubén Bellido, a cybersecurity professor at Deusto Formación, offered immediate advice to affected firms. He recommended that companies avoid restarting equipment or changing passwords, as these steps do not resolve the underlying issue. Bellido urged businesses to switch to alternative communication methods. Prioritizing phone calls over email allowed teams to notify clients and colleagues effectively during the outage.
Bellido also warned users to watch for fake login prompts after major outages. Cybercriminals often send fraudulent emails that mimic Microsoft messages. He suggested treating email as critical infrastructure and ensuring essential data remains accessible offline. Having a tested backup channel that does not depend on the same provider is vital for stability.
Eusebio Nieva, technical director for Check Point Software in Spain and Portugal, highlighted the security risks of the current digital setup. He described the industry as a digital monoculture where too many firms depend on the same few vendors. When both email and access verification fail, companies lose access to services that appear independent. Nieva warned that this confusion creates opportunities for cyberattacks using fake support messages and payment fraud.
Users adapted to the silence in various ways. Some switched to WhatsApp for team meetings. Others returned to phone calls or in-person conversations. Brands like Air India and Aldi posted messages on social media, encouraging people to take breaks or enjoy the unexpected pause. The outage served as a reminder of how deeply integrated Microsoft services are in daily work routines.
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