Security firm Sublime found that malicious calendar invites sent via email, known as ICS phishing, have surged dramatically, rising 282% in June, 338% in July, and 1,216% in August, with a projected 2,852% jump in September. These fake invites exploit a default feature in Outlook, Gmail, and Apple Mail that auto-adds ICS files to a user's calendar before they accept or decline them.
zdnet.com
· 2026-09-18
A virtual event titled Cybersecurity Outlook 2027 will bring together industry analysts, researchers and experts to discuss emerging cyber threats from criminals and nation-states as the new year approaches. The sessions will also cover how AI-driven tools and other technologies can help organizations protect multi-cloud and hybrid environments.
darkreading.com
· 2026-09-17
Microsoft confirmed it is still investigating why Copilot and Copilot Chat buttons vanish from classic Outlook for Windows after upgrading to build 20026.20182 or later. The issue affects users with Copilot Chat Basic or M365 Copilot Premium licenses, blocking access to Copilot from the ribbon, app bar, or Add Apps menu.
bleepingcomputer.com
· 2026-09-16
Microsoft Outlook users encountering the 'Your message can't be displayed right now' error can resolve it by clearing their cache, whether they use the web version or the desktop client. The fix forces Outlook to rebuild fresh copies of emails without deleting any messages, calendar events, or contacts.
engadget.com
· 2026-09-14
Microsoft has patched a bug that stopped Teams and the new Outlook for Windows from launching on ARM-based devices like the Surface Pro 11 and Surface Laptop 7. The issue, triggered by August 2026 security updates (KB5121003), mainly hit new or freshly imaged PCs without Microsoft Store updates. The fix arrived with the September 8 cumulative update, KB5124012.
bleepingcomputer.com
· 2026-09-11
Google has announced that starting January 2027, Gmail's 'Send as' feature will no longer support external email addresses like those from Yahoo or Outlook. The change won't affect Google Workspace aliases or other Gmail-owned addresses, only third-party accounts linked through SMTP.
support.google.com
· 2026-09-04
Microsoft says its August 11, 2026 security update (KB5121003) is causing Teams and New Outlook to fail to launch or crash unexpectedly on ARM-based Windows 11 24H2 devices like the Surface Pro 11 and Surface Laptop 7. The problem mostly hits new or freshly imaged machines that haven't yet grabbed Microsoft Store updates, while Classic Outlook, Word and Excel remain unaffected.
bleepingcomputer.com
· 2026-09-03
Microsoft confirmed widespread service degradation across its 365 suite, affecting Outlook, OneDrive, SharePoint, Teams, Copilot and Universal Print. Users reported problems sending or receiving emails, loading files, and accessing print jobs, though Microsoft says availability has largely stabilized above 99 percent.
androidauthority.com
· 2026-09-02
A multi-day outage tied to Microsoft's Exchange Online authentication system continues to disrupt Outlook and other Microsoft 365 services into Tuesday, even after Monday's mitigation efforts. Microsoft says the root cause was a misconfiguration preventing authentication components from deploying properly across parts of its infrastructure, affecting SharePoint, Teams, Copilot, Defender XDR, Purview, the admin center, and Universal Print alongside Outlook.
techcrunch.com
· 2026-09-01
OpenAI reported elevated errors and latency on ChatGPT Work, its enterprise AI agent, for about three hours on Monday, while Microsoft separately confirmed degraded functionality across Exchange Online. Downdetector logged over 1,100 reports for OpenAI products and nearly 4,600 for Microsoft Outlook around 2:24 p.m. ET, though the companies gave no indication the two incidents were related.
cnbc.com
· 2026-08-31
Microsoft confirmed a widespread outage of Exchange Online on Monday, causing Outlook users to experience delayed or failed emails, authentication errors, and search failures. The company traced the problem to an authentication component and began testing a fix on part of its infrastructure before a broader rollout. Downdetector logged over 5,000 user reports by 2 PM ET, with complaints also flooding social media.
techcrunch.com
· 2026-08-31
Microsoft confirmed it is investigating a major Exchange Online disruption, tracked internally as EX1464935, after a flood of user reports began around 5:30 PM UTC. Tens of thousands of users reported problems sending and receiving emails, logging into accounts, and managing mailboxes through Outlook and admin tools, according to Downdetector data.
bleepingcomputer.com
· 2026-08-31