Audio dropping out mid-project is one of the most frustrating problems in Adobe Premiere Pro. The good news: silence almost always comes from a setting, not corrupted footage. The bad news: there are ten or more places that setting could live. This guide walks you through each cause in logical order, from the fastest one-click checks to deeper system-level fixes, so you can get back to editing without guessing.
Why Premiere Pro Loses Audio (And How to Diagnose It Fast)
Before jumping into individual fixes, it helps to know which layer of the software is causing the problem. Premiere Pro audio failures come from one of three places: the timeline and track level, the software preferences and sequence settings, or the system and OS output. Working through them in that order keeps you from spending ten minutes in Preferences when the Mute button is the actual culprit.
Use the table below to match your symptom to the most likely cause, then jump directly to that fix.
|
Symptom |
Likely Layer |
Start With |
|---|---|---|
|
Waveform is visible but no sound during playback |
Output routing / Audio Hardware |
Fix 3 or Fix 4 |
|
No waveform visible on the clip |
File / codec issue |
Fix 6 or Fix 7 |
|
Some tracks play, others are silent |
Track level (mute, solo, output toggle) |
Fix 1, Fix 2, or Fix 5 |
|
Audio worked yesterday, silent after relaunch |
Preferences or OS change |
Fix 3 or Fix 9 |
|
Playback audio works but exported file has no sound |
Export settings |
Fix 12 |
|
Persistent silence after trying everything above |
Cache corruption or driver issue |
Fix 8, Fix 10, or Fix 11 |
If you are not sure which category fits, start at Fix 1 and work down. Most users resolve the problem before they reach Fix 6.
Fix 1 — Check the Audio Track Is Not Muted or Soloed
The Mute and Solo buttons on the track header are the single most common cause of silence in Premiere Pro, and they are easy to trigger by accident.
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Look at the left edge of each audio track in the Timeline panel. The M button is the Mute toggle. If it appears highlighted or lit, that track is muted. Click it once to turn muting off.

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Check the S (Solo) button on every audio track. Solo mode silences all tracks except the one that is soloed. If you soloed a track during a previous review session and forgot, every other track will be silent.
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Scroll through all audio tracks — not just the ones visible on screen. A muted or soloed track lower in the timeline can affect what you hear without being obvious.
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If multiple tracks appear unmuted but audio is still silent, check for exclusive solo mode. In some Premiere versions, clicking Solo on a second track while another is already soloed deactivates the first rather than stacking solos. Click all Solo buttons off and test playback again.

Solo Mode Trap: If even one track has Solo active, every other track in the sequence goes silent regardless of its Mute state. When in doubt, click every lit S button to clear them all, then test playback before touching anything else.
Fix 2 — Confirm Track Volume and Audio Clip Gain
Even with mute and solo cleared, audio will be silent if the volume has been dragged to its lowest value or the clip gain has been zeroed out.
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Open the Audio Mixer panel (Window > Audio Mixer). Look at the volume fader for each track. A fader at -∞ (negative infinity) produces complete silence. Drag it back to 0 dB as a starting point.

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Check the track header in the Timeline panel. Each audio track has a small volume rubber-band or level control. If you do not see it, expand the track height.
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For individual clips, right-click the clip in the timeline and choose Audio Gain (or press G with the clip selected). The gain value should not be set to a large negative number.

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Note the difference between these two controls: Clip Gain adjusts the level of a specific clip before it reaches the track fader. Track Volume controls the overall output of the entire track. Both need to be at a reasonable level for audio to pass through.
Fix 3 — Set the Correct Audio Output Device in Preferences
This is the most critical fix when you hear absolutely nothing, regardless of which track or clip is playing. Premiere Pro may be routing audio to a device that is disconnected, powered off, or no longer present on your system.
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On Windows, go to Edit > Preferences > Audio Hardware. On macOS, go to Premiere Pro > Preferences > Audio Hardware.

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Look at the Default Output dropdown. Confirm it matches the device you are currently using (your speakers, headphones, or audio interface).
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If the selected device is a USB audio interface, virtual audio driver, or Bluetooth headset that is no longer connected, Premiere will route audio to it and you will hear nothing from your actual speakers.
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Select the correct output device from the dropdown and click OK.

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Restart playback and test.
Windows-specific note: Premiere on Windows supports ASIO, MME, and WASAPI drivers. If you use an ASIO interface (such as a Focusrite Scarlett), make sure the correct ASIO driver is selected, not the generic “Adobe Desktop Audio” MME option.
macOS-specific note: Core Audio manages output on Mac. If you recently switched between built-in speakers and an external device, Premiere may not have updated its selection automatically. Revisit this preference after any audio hardware change.
Fix 4 — Check Audio Output Mapping in Sequence Settings
Even when the correct output device is selected in Preferences, individual tracks can be mapped to “None” inside the sequence itself, which produces silence regardless of other settings.
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Go to Sequence > Sequence Settings and click the Audio tab (or look for the Audio Settings section).

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Find Audio Track Output Mapping. Each numbered track (Audio 1, Audio 2, etc.) should be mapped to your active output, not to “None.”
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If any track shows “None,” change it to your intended output channel using the dropdown.
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Also check the channel configuration of the sequence against the clips you are using. A mono clip placed in a stereo-only sequence, or a stereo clip in a mono sequence, can produce silent or unexpected results depending on the Premiere version.
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Click OK and test playback.
Fix 5 — Enable the Audio Track Output (A1/A2 Toggle)
Each audio track in the Premiere timeline has a small output-enable button in the track header. It is labeled with the track’s routing assignment (A1, A2, etc.) and functions as an on/off switch for that track’s output. It is easy to toggle off accidentally, especially when resizing or customizing track headers.
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Look at the far left of each audio track header in the Timeline panel.
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Find the small speaker icon or the A1 / A2 label button. If it appears dimmed or inactive, the track output is disabled.
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Click it once to re-enable the output.
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Test playback.

Note: If the A1/A2 button is not visible in your track header, right-click on the track header area and choose Customize. You can add or restore the Track Output Assignment button from the customization menu.
Fix 6 — Verify the Source File Contains Audio
If you see no waveform on a clip at all, the source file may simply have no audio stream. This happens when a camera records in a video-only mode, when an audio channel was disabled at the device level during recording, or when a file has been converted with audio stripped out.
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In the Project panel, right-click the problem clip and select Properties.

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In the Properties window, look for audio stream information. If no audio stream is listed, the file contains no audio data.
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If the Properties panel confirms the audio stream is missing, no Premiere Pro setting will restore it. You will need to re-source the file from the original recording device or a backup.
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As a quick double-check, open the clip in the Source Monitor. If the audio waveform appears there but not in the timeline, the issue is a track mapping problem (return to Fix 4 or Fix 5). If no waveform appears anywhere, the file has no audio.
Fix 7 — Resolve Unsupported or Unconformed Audio
Premiere Pro must “conform” certain audio formats before they can play back. During conforming, you will see a yellow progress bar across the timeline. Playing back before this process completes can result in silence or distorted audio.
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Watch for the yellow conforming bar at the top of the timeline when you import a new file. Wait for it to finish before testing playback.
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If the conforming bar never completes or the file remains silent after it finishes, the audio codec may be unsupported in your version of Premiere Pro.
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In these cases, transcode the file to a widely supported format using Adobe Media Encoder. H.264 video with AAC audio in an MP4 container is the most reliable combination for Premiere compatibility.
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Re-import the transcoded file and test.
Formats that commonly cause conforming issues include certain MXF variants, proprietary camera codecs, and audio recorded at non-standard sample rates.
Fix 8 — Clear the Media Cache and Purge Conforming Files
Corrupted peak files (.pek) or damaged conformed audio files can cause persistent silence even when every setting in the project appears correct. Clearing the cache forces Premiere to rebuild these files cleanly.
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Save your project before proceeding.
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Go to Edit > Preferences > Media Cache (Windows) or Premiere Pro > Preferences > Media Cache (macOS).

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Click the Delete button next to “Delete all media cache files from the system.”

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Choose Delete All Media Cache Files, not “Delete Unused Media Cache Files,” to ensure corrupted files are fully removed.
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Click OK and close Preferences.

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Reopen your project. Premiere will re-conform audio files automatically. Wait for the conforming process to finish before testing playback.
This step does not affect your .prproj project file or your source media. Only the temporary cache data is removed.
Fix 9 — Reset Premiere Pro Preferences
If all the above fixes have failed to restore audio, a corrupted preferences file may be preventing Premiere from communicating with your audio output correctly. Resetting preferences returns Premiere to its default state.
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Fully quit Premiere Pro.
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On Windows, hold Alt while double-clicking the Premiere Pro shortcut to launch it. On macOS, hold Option while clicking the Premiere Pro icon in the Dock or launching from the Applications folder.
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When prompted, confirm that you want to reset preferences.
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Allow Premiere to finish launching, then open your project and test audio playback.
Be aware that this reset will also clear your custom workspace layouts, keyboard shortcuts, and recently used project list.
Fix 10 — Update or Reinstall Audio Drivers and Premiere Pro
Outdated audio drivers or a conflict introduced by a recent OS update can break Premiere Pro’s audio output at the system level.
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Open Adobe Creative Cloud and check for available Premiere Pro updates. Install any pending updates and restart.
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On Windows, open Device Manager and look under “Sound, video and game controllers.” Right-click your audio device and select “Update driver.” Also check the manufacturer’s website for the latest ASIO or WASAPI driver if you use a third-party audio interface.
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On macOS, check System Settings for any pending OS updates that may include Core Audio fixes.
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If updating does not resolve the issue, consider a full uninstall and reinstall of Premiere Pro through Creative Cloud. This is a last resort and rarely necessary if earlier steps have been followed.
No Sound on Premiere Pro Export (Separate Issue)
If audio plays correctly during timeline playback but the exported file has no sound, the problem is in your export settings, not the project itself. There are two primary causes.
Sub-case 1: Export Audio checkbox is unchecked
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Open the Export dialog (File > Export > Media, or use the Export workspace in Premiere 2023+).

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Click the Audio tab in the export settings panel.
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Confirm that the Export Audio checkbox is checked. If it is unchecked, the exported file will be video-only with no audio stream.
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Check the box, then proceed with export.

Sub-case 2: Mismatched or unsupported audio codec for the container
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In the same Audio tab, check the Audio Format and Audio Codec settings.
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Make sure the codec is compatible with your chosen container. For example, MP4 containers work reliably with AAC audio. Selecting an incompatible codec can result in a silent audio stream in the final file.
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For most delivery formats, AAC at 320 kbps and 48000 Hz sample rate is a safe and widely supported choice.
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Re-export and test the output file in a media player outside of Premiere to confirm audio is present.

FAQ — Premiere Pro Audio Troubleshooting
Why can I see the audio waveform but still hear nothing?
A visible waveform confirms that audio data exists inside the file. Silence in this situation points to an output routing problem rather than a missing audio stream. Check your Audio Hardware preferences (Fix 3) and confirm that the sequence’s output mapping is not set to “None” (Fix 4). These two settings are responsible for the majority of waveform-visible, playback-silent cases.
Why does audio play in the Source Monitor but not in the Timeline?
When audio works in the Source Monitor but disappears in the timeline, the clip is fine but something in the track routing is blocking playback. The most likely causes are the track output toggle being disabled (Fix 5) or a channel configuration mismatch between the clip and the sequence settings (Fix 4). Check both before looking elsewhere.
Premiere Pro audio stopped working after a Windows or macOS update. Why?
Operating system updates frequently reset the default audio output device or install new audio drivers that override previous selections. Premiere Pro does not always detect this change automatically. Go to Preferences > Audio Hardware and reselect your intended output device from the dropdown. This resolves the issue in most post-update cases.
How do I fix no audio on only one clip while others play fine?
Right-click the problem clip in the timeline and choose Audio Gain to confirm the gain value is not set to a large negative number. Also right-click the clip in the Project panel and check Properties to confirm an audio stream exists. If the stream is missing from this clip only, the source recording itself did not capture audio.
Does purging the media cache delete my project or source files?
No. Media cache files are temporary data that Premiere creates to speed up playback and conforming. Deleting them removes only those temporary files. Your .prproj project file and all source media remain completely untouched. Premiere will simply rebuild the cache the next time the project is opened.
Getting Your Audio Back: What to Do Next
In most cases, one of the first five fixes resolves the problem: a muted track, a zeroed fader, a wrong output device, a misconfigured sequence setting, or a disabled track output toggle. If you needed to go further, the cache clear or preferences reset typically catches what remains. Start at the top of this list next time audio goes missing, and you will spend far less time troubleshooting.
For related issues, consider reading: how to fix audio out of sync in Premiere Pro, how to improve dialogue audio quality in Premiere Pro, and the best export settings for YouTube and social media delivery.