Clipchamp Export Stuck at 0 Percent or 99 Percent on Windows 11 Solutions

Problem Overview

When exporting videos in Clipchamp on Windows 11, the export process often freezes at 0% or 99%. The main culprits are GPU hardware acceleration conflicts, accumulated cache and temporary files, and driver or Store app synchronization issues.

Table of Contents

1. Root Causes
2. Cause Comparison
3. Solutions
4. Special Cases & Workarounds
5. Q&A
6. Quick Fix Checklist
7. Frequently Asked Questions

Root Causes

• Hardware Acceleration Conflicts: Certain GPU and driver combinations cause Clipchamp's hardware acceleration feature to crash during export.
• Cache and Temporary File Buildup: Large amounts of data accumulate in the %LocalAppData%\Packages\Clipchamp.Clipchamp_yxz26nhyzhsrt folder (specifically in EBWebView and IndexedDB), causing performance degradation.
• Store App Sync Errors: Delayed app or codec updates, or improper synchronization with the Microsoft Store, lead to processing failures.

Cause Comparison

Cause	Description	Solution
GPU Acceleration	Freezing occurs when hardware acceleration is enabled with certain effects or codec combinations	Disable hardware acceleration in Clipchamp settings and retry
Cache Buildup	Excessive temporary data accumulated in EBWebView and IndexedDB	App Reset or manual cache folder cleanup
Drivers	Compatibility errors from outdated GPU drivers or codecs (HEVC source files may require Microsoft HEVC Video Extensions)	Update GPU drivers to latest version, install HEVC extension if needed
Source Files	Corrupted segments or specific codec sections halt processing	Split problematic sections for partial exports or re-encode source files

Solutions

Try This First: (Personal version only) Disable hardware acceleration in Settings → Export, restart the app, and retry the export.

1. Disable Hardware Acceleration: Turn off the hardware acceleration option in Clipchamp's settings menu, then retry the export
2. Reset the Windows App: Go to Settings → Apps → Installed apps → Clipchamp (⋯) → Advanced options → Reset — Before resetting, ensure your original media files used in the project are safely stored (you may need to reconnect some media after the reset)
3. Update GPU Drivers: Install the latest drivers through NVIDIA, AMD, Intel control panels, or Windows Update
4. Check Source Files: Isolate problematic sections or test export with different files
5. Sync the Store: Open Microsoft Store and install all updates from your Library

HEVC requirement & pricing note (Windows policy)

HEVC/H.265 sources on Windows often require Microsoft’s HEVC Video Extensions from the Microsoft Store. It is typically a small paid add-on; availability and pricing can vary by region and time. If HEVC files won’t decode or export, install/update this extension and retry.

Note: App Reset deletes the app’s data (settings and cache). Projects linked to your account/cloud will reappear after you sign in again, but locally cached assets may be removed, so you might need to relink some media.

Warning: Manually deleting the %LocalAppData%\Packages\Clipchamp.Clipchamp_yxz26nhyzhsrt\LocalState\EBWebView\Default\IndexedDB folder may result in loss of work in progress. Always back up first.

Location of the 'Hardware Acceleration' toggle in Clipchamp settings (Source: Microsoft Support )

Special Cases & Workarounds

• Partial Exports: Split the video at the freeze point and export sections separately as MP4 files, then merge them afterward
• Re-encode Source Files: Convert problematic source videos to H.264 MP4 format using tools like HandBrake, then re-import them

Technical Explanation (Expand)

Large EBWebView/IndexedDB stores are frequently observed on affected systems and may contribute to I/O bottlenecks, especially alongside hardware-accelerated exports. Resetting or clearing cache often restores normal processing.

Q&A

Is freezing at 0% a common error?

Yes, it's frequently reported. Start by disabling hardware acceleration, resetting the app, and updating through the Store in that order, then try again.

Will resetting the app delete my project files?

Generally, only settings and cache are reset while project files remain intact. However, locally cached assets can be removed; you may need to relink some media after signing back in.

Is updating GPU drivers mandatory?

Not mandatory, but highly recommended. Updated drivers significantly improve export pipeline stability.

Quick Fix Checklist (5 Steps)

• Disable hardware acceleration in Clipchamp settings
• Settings → Apps → Installed apps → Clipchamp (⋯) → Advanced options → Reset
• Update GPU drivers to the latest version (NVIDIA/AMD/Intel)
• Split problem sections and try partial exports
• Install all updates from Microsoft Store Library

Recommended Order: Following steps 1 through 3 in sequence resolves most cases immediately.

Frequently Asked Questions

Do I always need to disable hardware acceleration?

Not always. Only disable it when problems occur. If everything works normally, you can re-enable it to maintain faster processing speeds.

Can I manually delete the EBWebView or IndexedDB folders?

You can after backing up, but in-progress editing resources may need to be reloaded. It's safer to use the app Reset feature first.

References

• Microsoft Support — Clipchamp Export Troubleshooting (Recommendations for disabling hardware acceleration and updating GPU drivers)
• Microsoft Support — Clipchamp Temporary File Storage Location Guide (Explanation of AppData/Packages path)