claude-code - 💡(How to fix) Fix [BUG] Claude Code VM download fails with checksum mismatch - linux-arm64 binary truncated [1 comments, 2 participants]

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anthropics/claude-code#45538Fetched 2026-04-09 08:03:03
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Error Message

Error Messages/Logs

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Preflight Checklist

  • I have searched existing issues and this hasn't been reported yet
  • This is a single bug report (please file separate reports for different bugs)
  • I am using the latest version of Claude Code

What's Wrong?

Platform: macOS, Apple Silicon (MacBook Pro) Claude Desktop Version: 1.1348.0 (efa3fd) — 2026-04-08 Claude Code Release Attempted: 2.1.92 What's Wrong: The Desktop app fails to launch Code and Cowork tabs. It downloads the linux-arm64 binary but receives fewer bytes than expected, causing a checksum mismatch on every attempt. All 3 retry attempts fail. From logs (~Library/Logs/Claude/main.log): [ClaudeCodeManager-VM] Downloading from https://downloads.claude.ai/claude-code-releases/2.1.92/linux-arm64/claude.zst [ClaudeCodeManager-VM] Downloaded file size: 115867648 bytes, transferred bytes: 31815049 bytes (expected: 50781363) [ClaudeCodeManager-VM] Checksum mismatch: expected=c2f7369888de4c14205925fd3ea1ecda6c81307a766a5ba04abc18df5421984d, actual=9eb75c5fc0b26a91afefd8a642178f022cc2cd9d96e213abd72b57118c45cc33 [ClaudeCodeManager-VM] All download attempts failed

What I've tried:

Retrying multiple times Switching networks (WiFi + mobile hotspot) Using a VPN (Japan server)

What Should Happen?

Expected behavior: Code and Cowork tabs load normally. Actual behavior: Both tabs fail with "Download failed. Check your connection and try again." Note: Browser-based Claude Code works fine. Terminal install via curl -fsSL https://claude.ai/install.sh | bash also works. Issue is isolated to the Desktop app's internal VM downloader. Claude code in VS code also works.

Error Messages/Logs

Steps to Reproduce

desktop app, code & cowork aren't working - i didnt do anything specific

Claude Model

Not sure / Multiple models

Is this a regression?

Yes, this worked in a previous version

Last Working Version

No response

Claude Code Version

1.1348.0 (efa3fd)

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

No response

extent analysis

TL;DR

The issue can be worked around by using an alternative download method or checking the network connection for issues that might cause incomplete downloads.

Guidance

  • Verify the network connection stability and check for any issues that might cause incomplete downloads, such as firewall rules or proxy settings.
  • Try downloading the claude.zst file manually from the specified URL (https://downloads.claude.ai/claude-code-releases/2.1.92/linux-arm64/claude.zst) to see if the issue persists outside of the Desktop app.
  • Check the system's DNS settings and consider using a public DNS service to rule out any DNS-related issues.
  • If the issue is specific to the Desktop app's internal VM downloader, consider reporting this as a bug to the developers, as it may be a regression that needs to be fixed.

Example

No specific code example is applicable in this case, as the issue seems related to the download process rather than a code snippet.

Notes

The fact that browser-based Claude Code and terminal installations work fine suggests that the issue is isolated to the Desktop app's download mechanism. The problem might be related to how the Desktop app handles downloads or interacts with the system's network settings.

Recommendation

Apply workaround: Given the information provided, using an alternative method to download and install Claude Code (such as the terminal installation method mentioned) could serve as a temporary workaround until the issue with the Desktop app is resolved.

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