Office Apps Freezing

Fix Microsoft Streaming Service Proxy Failing with Camera

Maira Mehtab Sep 28, 2026 868 views

Question details

Users are experiencing camera freezes during Teams meetings and facial login failures because the Microsoft Streaming Service Proxy repeatedly fails and stops working.

Product: Microsoft Teams / Windows Camera
Device & OS: Windows (frequently reported on Lenovo laptops)
Scenario: Attempting to use the webcam during a Microsoft Teams meeting or when utilizing Windows Hello facial recognition login.
Observed behavior: The camera freezes, and the Microsoft Streaming Service Proxy service crashes. Disabling and re-enabling the service through Device Manager only provides temporary relief before the issue returns.

Before you start

Ensure your Windows operating system is fully up to date and briefly test your camera in another application (like the default Windows Camera app) to verify if the issue is isolated to Microsoft Teams.

Solution 1Recommended

Uninstall and Reinstall Camera Drivers

Updating or cleanly reinstalling the camera and chipset drivers can resolve the underlying hardware communication conflict causing the proxy service to fail.

Often, the Microsoft Streaming Service Proxy failure is tied to outdated or corrupted OEM drivers. Removing the faulty driver allows Windows to fetch a fresh copy.

Open Device Manager

Right-click the Windows Start button on your taskbar and select 'Device Manager' from the context menu.

Locate the Camera Device

Expand the 'Cameras', 'Imaging devices', or 'Sound, video and game controllers' categories to find your built-in or external camera.

Uninstall the Device

Right-click the camera name, select 'Uninstall device', and confirm the prompt. Do the same for the Microsoft Streaming Service Proxy if visible.

Restart and Update

Restart your computer. Windows will attempt to reinstall the driver silently. For the best results, visit your manufacturer's website (e.g., Lenovo Support) to download and install the latest camera and chipset drivers directly.

Device Reinstallation: Windows may silently reinstall the driver in the background upon reboot. If the problem persists, manually installing the OEM driver is required.

Solution 2

Reset the Microsoft Teams App Cache

Clearing corrupted temporary cache files in Teams can stop the app from freezing when accessing the camera proxy.

Solution 3

Test with the Teams Web Client

Using the web version of Microsoft Teams acts as a workaround to bypass desktop-specific streaming proxy failures.

Free Microsoft Office alternative

Switch to WPS Office for a Stable, Lightweight Workflow

If you are frustrated by heavy background proxy services, driver conflicts, and system freezing associated with Microsoft 365 components, consider switching to WPS Office. It provides a robust, lightweight desktop experience without relying on complex, unstable background streaming proxies.

1. Download the Installer: Visit the official WPS Office website and click the free download button.
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3. Open Your Documents: Launch WPS Office to instantly open, edit, and save your existing Microsoft Office files with full compatibility.

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Frequently Asked Questions

What is the Microsoft Streaming Service Proxy?

The Microsoft Streaming Service Proxy is a Windows driver component related to camera usage, Azure Media Services, and certain Office applications. It handles video streams for features like facial login (Windows Hello) and meeting software like Microsoft Teams.

Why does my camera driver repeatedly fail on my Lenovo laptop?

Many users, specifically on Lenovo models like the T14s, experience this issue due to driver conflicts between the built-in webcam hardware, Windows sleep/wake states, and the Microsoft Streaming Service Proxy. Updating chipset and camera drivers via Lenovo Vantage often helps resolve it.

How can I gather diagnostic logs for Microsoft Support?

If the proxy service keeps crashing, you can collect logs by opening the Windows Event Viewer, navigating to Windows Logs > Application, and saving the crash events. You can also press Ctrl + Alt + Shift + 1 inside Microsoft Teams to generate diagnostic files for support.

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