6 articles · Curated and written by practitioners
Microsoft investigates Teams desktop client launch failures on Windows
Microsoft has opened a service health advisory, TM1466820, after some Windows users found the Teams desktop client would not open or took up to two minutes to load. The company recommends Teams on the web or mobile while it hunts for a root cause.
Microsoft Patches Dozen-Plus Flaws, Apple Fixes Screen Sharing Bug CVE-2026-65400
Microsoft patched more than a dozen vulnerabilities across Active Directory, Azure, Entra, SharePoint and Teams, including three CVSS 10/10 flaws. Apple fixed a single Screen Sharing authentication bypass (CVE-2026-65400) in macOS.
Fake IT Support Calls on Microsoft Teams Push EtherRAT Malware
Threat actors are abusing Microsoft Teams voice calls to impersonate corporate IT support and trick employees into installing EtherRAT, a Node.js remote access trojan, according to Palo Alto Networks' Unit 42. The campaign chains phishing emails, external Teams calls, legitimate remote-access tools, and an MSI loader to gain initial access to corporate networks.
How to Clear Microsoft Teams Cache to Fix Performance Issues
Fix slow loading, sign-in loops, and sync problems in Microsoft Teams by clearing the cache. Covers new Teams on Windows and macOS, the built-in reset, and a PowerShell method.
Edge Update Breaks Right-Click Paste in Microsoft Teams Desktop Chats
An Edge update broke right-click paste in Teams desktop chats starting April 14, 2026. The paste option appears greyed out for URLs, text, and images. Ctrl+V still works. Root cause: Edge WebView2 runtime regression. Fix rolling out in stages.
Microsoft Confirms and Fixes Classic Outlook Crash Caused by Teams Meeting Add-in
Microsoft confirmed a known issue (EX1254044) where classic Outlook crashes and restarts in Safe Mode on older Office builds running the newest Teams Meeting Add-in, and has since shipped a fix.