Upload failed

The file could not be uploaded to the server.

UPLOAD_FAILED

Symptoms

  • The progress indicator starts and then fails part-way through.
  • Other parts of the app work normally — only the file transfer fails.

Likely causes

  • The browser uploads straight to object storage over a short-lived signed URL. A proxy that inspects or rewrites requests breaks that signature.
  • A VPN, firewall or endpoint-security agent blocks the storage host while allowing the app itself.
  • The connection dropped mid-transfer — common on large files over unstable Wi-Fi.

How to fix it

  1. Retry on a different network

    A phone hotspot is the fastest way to tell a network policy apart from a genuine fault. If it works there, the block is on your corporate network.

  2. Check the browser console for a blocked request

    A failed PUT to the storage host, or a CORS error naming it, points at a proxy or filter rather than at the app.

  3. Ask IT to allow the storage endpoint

    Signed uploads need the request to arrive unmodified. TLS-inspecting proxies must be given an exception for the host shown in the failed request.

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