RDP files Archives

Winsage

April 24, 2026

Microsoft beefs up Remote Desktop security with … hard-to-read messages

Microsoft has released an update to improve the security of its Remote Desktop feature, which includes a warning for users opening Remote Desktop (.rdp) files. However, this warning is not displaying correctly for some users due to a bug identified in the Known Issues list after the April 14 update. The issue primarily affects users with multiple monitors set to different display scaling, leading to overlapping text or obscured buttons. Microsoft has advised users to synchronize their display scaling settings or use keyboard navigation as a workaround. The company plans to address this issue in a future Windows update but is not issuing an Out-of-Band update specifically for it. Additionally, a serious vulnerability (CVE-2026-40372) was discovered in the .NET framework, affecting versions 10.0.0 to 10.0.6, which requires immediate attention. This vulnerability impacts all Windows versions that received the update, including Windows 11 26H1.

Winsage

April 15, 2026

Microsoft adds Windows protections for malicious Remote Desktop files

Microsoft has introduced new security measures for Windows 10 and Windows 11 to protect against phishing attacks that exploit Remote Desktop Protocol (RDP) connection files. These updates, part of the April 2026 cumulative updates (KB5082200, KB5083769, and KB5082052), include a one-time educational prompt for users upon first opening an RDP file, requiring acknowledgment of the associated risks. Subsequent attempts to open RDP files will display a security dialog with information about the file's publisher, the remote system address, and local resource redirections, with options disabled by default. If an RDP file is unsigned, a warning will indicate an "Unknown remote connection." These protections apply only to connections initiated through RDP files, not through the Windows Remote Desktop client, and can be temporarily disabled via the Windows Registry.