Legacyhost.exe Crashes Cause Conferencing Issues with HP Poly Lens

ControlUp’s Innovation Guild identified a high-severity crash pattern involving legacyhost.exe on systems using HP Poly Lens. The crashes correlate strongly with instability in conferencing applications such as Microsoft Teams and Zoom, where Poly Lens is used to manage and optimize connected audio and video devices. This pattern was surfaced through ControlUp’s global crash analytics, which analyzed anonymized metadata across customer environments to identify recurring application- and service-level failures that impact end-user collaboration.

This issue has been observed across 150+ organizations and is classified as high severity due to its direct impact on real-time communication workflows. Affected environments may experience:

• Audio or video devices failing to initialize properly
• Conferencing applications are becoming unstable or unresponsive
• Unexpected drops from meetings or inability to join calls
• Increased support tickets related to headset, camera, or conferencing reliability

Because Poly Lens often operates in the background as a device management layer, crashes in legacyhost.exe can disrupt multiple conferencing applications simultaneously.

Organizations using HP Poly Lens should:

• Review crash logs for legacyhost.exe on affected endpoints
• Validate the Poly Lens client version deployed across their environment
• Check for recently introduced updates or configuration changes related to Poly device management
• Apply the latest HP Poly Lens updates or recommended fixes as they become available
• Monitor conferencing stability closely following any remediation or upgrade

Where feasible, staged rollouts and post-update monitoring are recommended to confirm improvements and prevent regressions.

This finding underscores how background services and device-management components can disproportionately affect end-user experience, especially for collaboration tools that depend on consistent audio and video performance. ControlUp will continue monitoring this crash signature globally and share updates as new insights emerge. If you are experiencing similar conferencing issues with Poly Lens or legacyhost.exe, please share your experiences in the ControlUp Community, as community feedback can help expedite validation and resolution for everyone.