Oops! Microsoft gets 'black eye' from Teams outage
.png)
Microsoft Teams users were unable to access the collaboration app for more than two hours Monday due to an expired authentication certificate. The outage is something of an embarrassment for Microsoft which is looking to compete with popular rival Slack in the workplace collaboration market.
According to Microsoft, Teams had more than 20 million daily active users as of November.
“This is definitely a black eye for Microsoft, especially when it has touted its reliability in the wake of some high-profile Slack outages in the last couple of years,” said Irwin Lazar, vice president and Service Director at Nemertes Research.
“It is surprising that Microsoft didn't renew its certificate, and it shows that as Teams rapidly grows they will have to ensure they are addressing operational issues to prevent further downtime.”
Indeed, the prompt reaction to the outage is an indication of the growing importance of Teams as more and more office workers rely on team messaging tools.
“There is nothing like taking a service down to illustrate its popularity and importance. However, this is not a best practice we recommend,” Larry Cannell, a research director at Gartner, dryly noted.
An SSL certificate enables a secure connection between a web browser or app and a server, and is required for HTTPS-enabled sites. It helps protect users against security risks such as man-in-the-middle attacks by allowing data to be encrypted. When a certificate expires, the server can’t be identified and information cannot be sent. That was the case with Teams on Monday.
“Let’s hope that Microsoft learned their lesson from this fiasco and will put in place modifications to their processes and other types of changes to prevent it from happening again,” said Cannell.
Reports of issues began at around 8:50 a.m. ET, according to the Downdetector website. At 9:19 a.m. Microsoft tweeted out confirmation from its Microsoft 365 Status account that it was investigating the outage. By then, some users were no longer able to access the application.
About an hour later Microsoft announced that it had identified the problem as an expired authentication certificate that had not been renewed. It subsequently tweeted that the fix was initiated at 11:19 a.m. and confirmed at 4 p.m. it had “successfully deployed” the solution. Most users appear were able to access Teams by midday however.
Microsoft did not issue an apology to users from the account.
The outage led to other Teams users venting even more frustrations on Twitter.
source arnnet
Industry: Unified Communications
Latest Jobs
-
- Account Manager - IT Services
- Germany
- €90000 plus OTE and Car
-
Are you a deal closer with a hunter mindset? Do you know how to uncover business pain points, and turn them into long-term digital transformation partnerships? Our Client are growing their sales force across Germany and looking for an ambitious, straight-talking Account Manager to take the lead on new client acquisition. You’ll focus on mid-sized to large enterprises across Germany helping to shape their digital future with tailored IT solutions in Workplace, Cloud, and Security. • Drive Growth: Own the full sales cycle for new business across your region. • Solution Sell: Build bespoke offers in Security, Digital Workplace and Cloud solutions • Build Relationships: Establish a solid pipeline through smart prospecting, marketing-driven leads, and your own network. • Represent a brand known for trust, delivery, and tech excellence—with 4,000 employees globally and a growing team within Germany. What You Bring • Proven new logo sales experience in the IT services space (not hardware!) • Deep knowledge in one or more of: Cybersecurity, Digital Workplace, or Cloud • Confidence to lead enterprise deals and pitch directly to senior stakeholders • Fluent German and good English skills Sind Sie ein Abschlussprofi mit Hunter-Mentalität? Wissen Sie, wie man geschäftliche Pain Points identifiziert und in langfristige Partnerschaften zur digitalen Transformation verwandelt? Unser Kunde baut derzeit sein Vertriebsteam in ganz Deutschland aus und sucht eine ambitionierte, ehrliche Persönlichkeit als Account Manager, die den Lead bei der Neukundengewinnung übernimmt. Ihr Fokus liegt auf mittelständischen bis großen Unternehmen in Deutschland, denen Sie mit maßgeschneiderten IT-Lösungen in den Bereichen Workplace, Cloud und Security den Weg in die digitale Zukunft ebnen. Ihre Aufgaben • Wachstum vorantreiben: Verantwortung für den gesamten Vertriebszyklus im Neugeschäft Ihrer Region. • Lösungsorientierter Vertrieb: Entwicklung individueller Angebote in den Bereichen Security, Digital Workplace und Cloud-Lösungen. • Beziehungen aufbauen: Aufbau einer stabilen Pipeline durch gezielte Ansprache, marketinggenerierte Leads und Ihr eigenes Netzwerk. • Marke repräsentieren: Werden Sie Teil eines Unternehmens mit 4.000 Mitarbeitenden weltweit und einem stark wachsenden Team in Deutschland – bekannt für Vertrauen, Verlässlichkeit und technologische Exzellenz. Was Sie mitbringen • Nachgewiesene Erfahrung in der Neukundenakquise im Bereich IT-Services (kein Hardwarevertrieb!) • Fundiertes Wissen in mindestens einem der Bereiche: Cybersecurity, Digital Workplace oder Cloud • Selbstbewusstes Auftreten im Umgang mit Enterprise-Deals und Entscheidungsträgern auf Top-Level • Verhandlungssichere Deutschkenntnisse und gute Englischkenntnisse
-
- Senior SOC Analyst Level 3. Microsoft Security stack | Ability to achieve SC Clearance
- London
- To attract the right person
-
Job Title: Senior SOC Analyst Level 3. Microsoft Security stack | Ability to achieve SC Clearance Location: Hybrid remote | London / Berkshire Overview: Senior SOC Analyst Level 3 to join a specialist Managed Security Services business. You will be responsible for advanced threat hunting / triage, incident response etc with a strong focus on the Microsoft Security Stack. Key Responsibilities: Lead and resolve complex security incidents / escalations Conduct advanced threat hunting using the Microsoft Security Stack. Build, optimise and maintain workbooks, rules, analytics etc. Correlate data across Microsoft 365 Defender, Azure Defender and Sentinel. Perform root cause analysis and post-incident reporting. Aid in mentoring and upskilling Level 1 and 2 SOC analysts. Required Skills & Experience: The ability to achieve UK Security Clearance (SC) – existing clearance ideal. (Sorry no visa applications) Current experience working with a SOC environment Microsoft Sentinel: Development and tuning of custom analytic rules. Workbook creation and dashboarding. Automation using Playbooks and SOAR integration. Kusto Query Language (KQL): Writing complex, efficient queries for advanced threat hunting and detection. Correlating data across key tables (e.g., SignInLogs, SecurityEvent, OfficeActivity, DeviceEvents). Developing custom detection rules, optimising performance, and reducing false positives. Supporting Sentinel Workbooks, Alerts, and Playbooks through advanced KQL use. Deep understanding of incident response, threat intelligence and adversary techniques (MITRE ATT&CK framework). Strong knowledge of cloud and hybrid security, particularly within Azure. Additional Requirements: Must hold or be eligible to achieve a minimum of Security Clearance (SC) level. Nice to have certifications (e.g., SC-200, AZ-500, GIAC) are desirable. Strong problem-solving and analytical skills. Excellent communication for clear documentation and team collaboration. Please follow Wheaton’s Law.
-
- New Business Sales Hunter | Cyber Security (UK Based)
- London
- To attract the right person
-
New Business Sales Hunter needed | Cybersecurity (UK Based) Are you looking for uncapped commission, a fun and sociable team that drives success with no politics? If so...You must Be UK based - and able to achieve UK SC clearance. (sorry no visas) Have a demonstrable history of sales success in Cyber Security Follow Weatons law. The role: Seeking a proven New Business Sales Hunter to join an established, successful and expanding cyber security firm. New business focused - £1m GP year one target (ramped). Sell a blend of security services & professional services. Ideal experience selling some or all of the following Cyber strategy & risk management Managed detection & response (MDR) Penetration testing Compliance & audit support You: Strong cybersecurity/IT services sales track record. Confident selling into mid-market & enterprise. UK based - London commutable 1x per week. Hunter mindset, full sales cycle ownership. Don't just send an email to apply give me a call on 07884666351
-
- CyberArk Architect
- London
- Upto £110,000 plus bonus and benefits
-
Are you ready to lead from the front and drive innovation in the Identity & Access Management (IAM) space? We’re looking for a seasoned CyberArk Architect who has CDE-CPC ideally or experience with privilege Cloud, someone who can lead with vision, execute with precision, and inspire teams to deliver excellence. As a key leader in our organisation, you’ll bring your strong business acumen and a technology-focused, innovative mindset to the table. You’ll be driving strategic initiatives, shaping transformation programs, and empowering teams to think big and deliver even bigger. Acting as a subject matter expert in CyberArk Leading strategic transformations in: Identity Governance Privileged Access Management (PAM) Access Management Customer Identity and Access Management (CIAM) Building and maintaining strong, collaborative relationships within the team Communicating clearly and confidently — both written and verbal — to deliver updates, raise potential issues, and share insights If you are interested in the above position we are looking for people with: deep expertise and a successful track record in IAM strategy, delivery, or assurance with CyberArk Hold relevant certifications such as CDE in Privileged Cloud or Guardian Have experience in a client-facing role (preferred, but not essential) Thrive in a hybrid working environment and are available to work from our or client London office three days a week Lead with clarity, communicate with impact, and adapt quickly to changing priorities