Troubleshooting c9450032 Error and Sound Device Not Found in Windows Movie Maker

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Ngày cập nhật gần nhất: 15/3/2026

If you're using Windows Movie Maker to craft a memorable photo slideshow for your friends but facing the frustrating inability to add background music due to the persistent 'c9450032' error, let's tackle this issue together!

Windows Movie Maker is a software designed for creating your own video slideshows or albums to share with loved ones or friends. However, a recent challenge you've encountered is the inability to use sound as a background music for your videos—a crucial aspect in making your videos engaging, accompanied by the error message 'Error c9450032'

Fixing the c9450032 Error in Windows Movie Maker

Step 1: Right-click on the speaker icon in the system tray --> Sound

Alternatively, click on Start Menu --> Control Panel --> Hardware and Sound --> Change system sounds

Step 2: The Sound dialog opens --> Recording tab, choose the Recording device you want to use, click Properties.

- If you want to directly record external audio -->Microphone.

Select Line In

Step 3: In the Properties window of that folder, under Device usage --> choose Use this device (enable) --> OK

Now, give it a shot! Reopen Windows Movie Maker and check if the audio device is set up as described in step 2. Once the device appears, you can seamlessly use Windows Movie Maker to create your videos.

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