tauri-apps/tauri · error

Failed to get parent

Error message

Failed to get parent

What it means

http_utils::extract_zip unzips a downloaded archive (used for the WiX toolset). For each non-directory entry it computes dest_path.parent() and .expect()s it; an entry whose name has no directory component (a top-level file like 'LICENSE' extracted to path.join(name)) makes parent() return None, panicking with 'Failed to get parent'.

Solutions

1. Clear the cached WiX toolset directory (e.g. %LOCALAPPDATA%/tauri/WixTools) and let tauri re-download it.
2. Update tauri-cli / tauri-bundler so the bundled WiX URL matches the current archive layout.
3. Check network setup (proxy/mirror) that could serve a modified zip, and retry the download.
4. Verify the downloaded zip integrity (open it manually and confirm entries are inside a folder).

// Verify the downloaded WiX zip has a sane layout before extraction
let f = std::fs::File::open(&zip_path)?;
let mut z = zip::ZipArchive::new(f)?;
assert!(z.file_names().any(|n| n.contains('/')), "unexpected WiX archive layout: entries at zip root");

// Wrap get_and_extract_wix; on panic-free failure, wipe the cache and retry once
match get_and_extract_wix(&dest) {
  Ok(_) => {},
  Err(e) => {
    let _ = std::fs::remove_dir_all(&dest);
    get_and_extract_wix(&dest).expect("WiX toolset download failed twice");
  }
}

When it happens

Trigger: get_and_extract_wix -> extract_zip when the zip archive contains a top-level file entry (no folder prefix in its name) so dest_path = path.join(name) still has no parent? — specifically when `path` itself is empty/root, making dest_path.parent() None.

Common situations: WiX toolset download URL changed and a differently-structured archive (files at zip root instead of inside a folder) is extracted; corrupted or partially downloaded zip; proxy/mirror serving unexpected content; cache poisoning under %LOCALAPPDATA%.

Understand the failure class

Background: "This is a bug, please report it": internal invariant violations, unreachable panics, and SNH errors explained — this error's family across 47 libraries.

Related errors

• Failed to open file
• failed to extract merge module filename
• app version build number cannot be greater than 65535
• app version major number cannot be greater than 255
• app version minor number cannot be greater than 255

AI-assisted analysis of tauri-apps/tauri@460ec35447 (2026-09-18). Data as JSON: /api/errors/e4f8245d02ee31a3. Report an issue: GitHub.

Appendix: source

Thrown at crates/tauri-bundler/src/utils/http_utils.rs:172

/// Extracts the zips from memory into a usable path.
#[allow(dead_code)]
pub fn extract_zip(data: &[u8], path: &Path) -> crate::Result<()> {
  let cursor = Cursor::new(data);

  let mut zipa = ZipArchive::new(cursor)?;

  for i in 0..zipa.len() {
    let mut file = zipa.by_index(i)?;

    if let Some(name) = file.enclosed_name() {
      let dest_path = path.join(name);
      if file.is_dir() {
        create_dir_all(&dest_path)?;
        continue;
      }

      let parent = dest_path.parent().expect("Failed to get parent");

      if !parent.exists() {
        create_dir_all(parent)?;
      }

      let mut buff: Vec<u8> = Vec::new();
      file.read_to_end(&mut buff)?;
      let mut fileout = File::create(dest_path).expect("Failed to open file");

      fileout.write_all(&buff)?;
    }
  }

  Ok(())
}

#[cfg(test)]
mod tests {

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