What causes "Adobe Express Video Not Exporting - MP4 Download Stuck"?

Adobe export backend outage Page dimensions below 146px or above 4096px on a side A corrupted clip or edit in the project Browser cache, extensions or pop-up blockers Exporting from mobile instead of desktop

How do I fix "Adobe Express Video Not Exporting - MP4 Download Stuck"?

1. Rule out an outage: Check status.adobe.com Check whether other, untouched projects export - if none do, it's on Adobe's side 2. Check the page size: Open Resize or the page size settings Make sure every side is between 146px and 4096px Resize if needed and export again 3. Duplicate the project and export the copy: In Your stuff, open the project menu and choose Duplicate Open the copy Export as MP4 4. Clear cache and use a desktop browser: Restart your computer Clear cache and cookies for adobe.com Export from Chrome, Edge or Safari on desktop, or in incognito 5. Disable extensions and pop-up blockers: Turn off ad and pop-up blockers for adobe.com Retry the export 6. Remove the last edited clip: If it broke after an edit, undo or remove the most recently added clip Export again to find the clip causing the failure

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Adobe Express Video Not Exporting - MP4 Download Stuck

Ongoing Web, iOS, Android Updated October 21, 2026

Quick answer

MP4 exports fail during Adobe outages, when page size is outside 146-4096px, or after edits break a project. Clear cache, try a different desktop browser, check page dimensions, and export a duplicate of the project.

Most likely fix: Rule out an outage.

Symptoms

The MP4 download stops at a percentage (often around 20% or 87%) and errors, a 4K video that exported before fails after a small edit, or 'Unable to download' appears.

Why it happens

Adobe export backend outage
Page dimensions below 146px or above 4096px on a side
A corrupted clip or edit in the project
Browser cache, extensions or pop-up blockers
Exporting from mobile instead of desktop

How to fix it

Try these in order — the most common fix is first.

1. Rule out an outage
1. Check status.adobe.com
2. Check whether other, untouched projects export - if none do, it's on Adobe's side
2. Check the page size
1. Open Resize or the page size settings
2. Make sure every side is between 146px and 4096px
3. Resize if needed and export again
3. Duplicate the project and export the copy
1. In Your stuff, open the project menu and choose Duplicate
2. Open the copy
3. Export as MP4
4. Clear cache and use a desktop browser
1. Restart your computer
2. Clear cache and cookies for adobe.com
3. Export from Chrome, Edge or Safari on desktop, or in incognito
5. Disable extensions and pop-up blockers
1. Turn off ad and pop-up blockers for adobe.com
2. Retry the export
6. Remove the last edited clip
1. If it broke after an edit, undo or remove the most recently added clip
2. Export again to find the clip causing the failure

This guide also covers

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