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Microsoft Teams Desktop Client Performance Optimization via New Call Handler

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1 unique sources, 1 articles

Summary

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Microsoft will introduce a new call handler process, ms-teams_modulehost.exe, for the Teams desktop client on Windows starting January 2026. This change aims to reduce launch times and improve call performance by separating the calling stack from the main application process. IT administrators are advised to allowlist the new process to prevent false-positive detections and ensure smooth operation.

Timeline

  1. 25.11.2025 16:24 1 articles · 23h ago

    Microsoft to Introduce New Teams Call Handler Process in January 2026

    Microsoft will roll out a new call handler process, ms-teams_modulehost.exe, for the Teams desktop client on Windows starting January 2026. This change aims to reduce launch times and improve call performance by separating the calling stack from the main application process. IT administrators are advised to allowlist the new process to prevent false-positive detections and ensure smooth operation.

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Information Snippets

  • Microsoft will introduce a new process, ms-teams_modulehost.exe, to handle calling features separately from the main Teams application process, ms-teams.exe.

    First reported: 25.11.2025 16:24
    1 source, 1 article
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  • The new process will optimize resource usage and enhance meeting experiences without affecting user workflows.

    First reported: 25.11.2025 16:24
    1 source, 1 article
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  • IT administrators must allowlist the new process in security software to prevent false-positive detections and calling issues.

    First reported: 25.11.2025 16:24
    1 source, 1 article
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  • The rollout will begin in early January 2026 and is expected to complete by late January 2026 for all deployment environments, including worldwide, GCC, GCC High, and DoD tenants.

    First reported: 25.11.2025 16:24
    1 source, 1 article
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