Skip to content
Menu

INTERNAL_UNARCHIVE_FAILED

Last updated February 9, 2026

The INTERNAL_UNARCHIVE_FAILED error typically occurs when the platform encounters a problem trying to extract your deployment's archive. This issue often can be related to one of the following:

  • The structure of your project or the contents within it
  • The size of your deployment bundle for Vercel functions exceeds the limit. For Vercel functions, the maximum uncompressed size is 250 MB
500

INTERNAL_UNARCHIVE_FAILED:

Internal Server Error

AI Assistance

I'm encountering an error and reviewing the docs at https://vercel.com/docs/errors/INTERNAL_UNARCHIVE_FAILED.md to understand what's happening. Please help me resolve this by: 1. **Suggest the fix**: Analyze my codebase context and propose what needs to be changed to resolve this error. If you do not have access to my codebase, ask me for the codebase and try to fix the error based on the information you have. 2. **Explain the root cause**: Break down why this error occurred: - What was the code actually doing vs. what it needed to do? - What conditions triggered this specific error? - What misconception or oversight led to this? 3. **Teach the concept**: Help me understand the underlying principle: - Why does this error exist and what is it protecting me from? - What's the correct mental model for this concept? - How does this fit into the broader framework/language design? 4. **Show warning signs**: Help me recognize this pattern in the future: - What should I look out for that might cause this again? - Are there similar mistakes I might make in related scenarios? - What code smells or patterns indicate this issue? 5. **Discuss alternatives**: Explain if there are different valid approaches and their trade-offs My goal is to fix the immediate issue while building lasting understanding so I can avoid and resolve similar errors independently in the future.

To troubleshoot this error, follow these steps:

  • Check your project files: Check for any files or directories that have been unnecessarily included in the deployment. Removing unnecessary files or directories can help reduce the size of your deployment
  • Check bundle size: Looking into your includeFiles and excludeFiles configuration to specify items affecting the function size. See bundle size limits

Was this helpful?

supported.