Microsoft Defender wrongly flags DigiCert certs as Trojan:Win32/Cerdigent.A!dha

Update: Added Microsoft’s statement to the end of the first section of this article. Microsoft Defender is detecting legitimate DigiCert root certificates as Trojan:Win32/Cerdigent.A!dha, resulting in widespread false-positive alerts, and in some cases, removing certificates from Windows. According to cybersecurity expert Florian Roth, the issue first appeared after Microsoft added the detections to a Defender signature update […]

Microsoft fixes Remote Desktop warnings displaying incorrectly

Microsoft has fixed a known issue causing newly introduced Windows security warnings to display incorrectly when opening Remote Desktop (.rdp) files. This known issue affects all supported Windows versions, including Windows 11 (KB5083768 & KB5083769), Windows 10 (KB5082200), and Windows Server (KB5082063), on devices with multiple monitors and different display scaling settings. Microsoft addressed the […]

Microsoft to roll out Entra passkeys on Windows in late April

Microsoft will roll out passkey support for phishing-resistant passwordless authentication to Microsoft Entra‑protected resources from Windows devices starting late April. The feature is expected to reach general availability by mid-June 2026 and will also extend passwordless sign-in to unmanaged Windows devices. Microsoft says that Entra passkeys on Windows will support corporate, personal, and shared devices, […]

Microsoft now lets admins uninstall Copilot on enterprise devices

Microsoft says IT administrators can now uninstall the AI-powered Copilot digital assistant from enterprise devices using a new policy setting, which has become broadly available after the April 2026 Patch Tuesday. RemoveMicrosoftCopilotApp is available as a Policy CSP and Group Policy after deploying this month’s Windows security updates on endpoints managed via Microsoft Intune or System […]