RDP Phishing Warning Breaks on Mixed-Scale Monitors
The new Remote Desktop warning is meant to stop users from blindly opening .rdp files. A display bug can hide or distort that prompt on some systems, which leaves the anti-phishing control in place only on paper.
Microsoft says the April 14 Windows update adds the warning for Remote Desktop files on Windows 11 and other supported Windows versions, tied to CVE-2026-40372. The Known Issues entry says the message may not render correctly when monitors use different scaling settings, such as 100 percent and 125 percent.
That turns a security change into a usability trap. Users who cannot read or use the prompt can still be pushed into accepting connection settings they were supposed to review, so the protection loses much of its value until Microsoft fixes the rendering bug.