Microsoft Teams
Microsoft fixes Outlook Classic crashes caused by Teams Meeting add-in
Microsoft has resolved a known issue that rendered the classic Outlook email client unusable for users who enabled the Microsoft Teams Meeting Add-in. The bug was first reported on March 12, when affected Microsoft 365 customers began experiencing Outlook crashes and prompts to start it in safe mode. Microsoft acknowledged the issue nearly a week later in […]
New KB5085516 emergency update fixes Microsoft account sign-in
Microsoft has released an emergency update to address a major issue that breaks sign-ins with Microsoft accounts across multiple Microsoft apps, including Teams and OneDrive. This issue appears after installing the KB5079473 cumulative update that Microsoft released as part of this month’s Patch Tuesday, and it warns users that the affected devices are not connected to the […]
Microsoft: March Windows updates break Teams, OneDrive sign-ins
Microsoft says the March Windows 11 update breaks sign-ins with Microsoft accounts across multiple Microsoft apps, including Teams and OneDrive. These sign-in issues appear after installing the KB5079473 cumulative update Microsoft released last week as part of this month’s Patch Tuesday, and, according to a Windows release health dashboard update published on Wednesday, will trigger warnings that […]
Microsoft: Enabling Teams Meeting add-in breaks Outlook Classic
Microsoft is working to address a known issue that renders the classic Outlook email client unusable for users who have enabled the Microsoft Teams Meeting Add-in. “Some users may be unable to use Microsoft Outlook Classic while the Microsoft Teams Meeting Add-in is enabled,” Microsoft said in an admin center update under EX1254044. While it […]
Microsoft Teams phishing targets employees with A0Backdoor malware
Hackers contacted employees at financial and healthcare organizations over Microsoft Teams to trick them into granting remote access through Quick Assist and deploy a new piece of malware called A0Backdoor. The attacker relies on social engineering to gain the employee’s trust by first flooding their inbox with spam and then contacting them over Teams, pretending to […]
Microsoft Teams will tag third-party bots trying to join meetings
Microsoft says Teams will soon automatically tag third-party bots in lobbies, allowing organizers to control whether they can join meetings. As detailed in a new Microsoft 365 roadmap entry, the feature is currently in development and scheduled to roll out in May 2026. When it reaches general availability, it will be available across Windows, macOS, […]
Microsoft: Anti-phishing rules mistakenly blocked emails, Teams messages
Microsoft says an Exchange Online issue that mistakenly quarantined legitimate emails last week was triggered by faulty heuristic detection rules designed to block credential phishing campaigns. As Microsoft explains in a preliminary post-incident report published this week, a software error in its email security system incorrectly flagged thousands of legitimate URLs as phishing links for nearly a week, […]
Microsoft Teams outage affects users in United States, Europe
Microsoft is working to resolve an ongoing outage affecting Microsoft Teams users, causing delays and preventing some from accessing the service. According to user reports on the outage-tracking platform DownDetector, this ongoing incident is causing problems when joining meetings with the Teams desktop client, accessing the Teams app, and signing in. “Users may experience delays and failures when sending […]
New Microsoft Teams feature will let you report suspicious calls
Microsoft plans to introduce a call reporting feature in Teams by mid-March, allowing users to flag suspicious or unwanted calls as potential scams or phishing attempts. The new “Report a Call” function will be enabled by default, but administrators who want to disable the new security feature can toggle off “Report a Call” in the Teams […]
Microsoft Teams to add brand impersonation warnings to calls
Microsoft will soon add new fraud protection features to Teams calls, warning users about external callers who attempt to impersonate trusted organizations in social engineering attacks. Named “Brand Impersonation Protection,” the new Teams security feature will start rolling out to the targeted release ring in mid-February and will be enabled by default. According to Microsoft, […]