Title: Troubleshooting Miracast Failures in Windows 11 Post-Update: Black Screen Issue with Aurzen ZIP Projector
Introduction
Many Windows 11 users rely on Miracast technology to wirelessly project their desktops to external displays. However, recent updates have introduced compatibility challenges, causing previously functional setups to falter. This article explores a specific black screen problem observed after updating to Windows 11 build 26100.4770 and beyond, particularly affecting Miracast connections with the Aurzen ZIP Mini Projector. We will examine the problem’s scope, testing procedures, and the current understanding of its root cause.
Overview of the Issue
Affected Product: Windows 11 Pro
Problematic Builds: 26100.4770 and later (including the 24H2 Feature Update)
Hardware Environment:
– Test Devices: Acer Nitro AN515-57, Lenovo Ideapad (older model), additional Acer Nitro with certified Wi-Fi 6, Intel, and NVIDIA components
– Display Receivers: Aurzen ZIP Mini Projector (Wi-Fi Miracast), LG TV Miracast
Firmware Status: Latest firmware installed on Aurzen ZIP (including manual updates)
Problem Description
Since updating to Windows 11 build 26100.4770, users have experienced a consistent issue where Miracast connections initially establish successfully—indicated by system recognition and handshake completion—but only display a black screen on the receiver device. The Windows system perceives the device as connected, and no errors are reported in logs or Event Viewer; however, the projected output remains black, with only the desktop background sometimes visible and not the active windows or applications.
Testing and Troubleshooting Efforts
Multiple comprehensive tests have been conducted to identify potential causes and workarounds, including:
- Firmware Verification: Confirmed that Aurzen ZIP firmware is current, with manual updates performed to rule out outdated firmware as the culprit.
- Driver Management: Full cleanup and reinstallation of relevant drivers (NVIDIA, Intel, Realtek) on affected PCs.
- System Configuration: Resetting Hyper-V, WSL2, and vEthernet configurations to eliminate virtual network interference.
- Boot State: Performing clean boots with all third-party services disabled.
- Mode Variations: Attempting different display modes (mirroring, extended desktop) via Windows shortcuts (Win+P, Win+K).
- Hardware Cross-Testing: Comparing the behavior on different hardware—an older Lenovo Ideapad unaffected by the
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