Models & Releases

Can anyone test uploading a .cs file to ChatGPT (desktop)?

A persistent bug prevents ChatGPT Plus users from uploading C# files on desktop, while mobile works fine.

Deep Dive

A ChatGPT Plus subscriber has identified a frustrating and persistent bug that blocks the upload of .cs (C#) files exclusively on the desktop version of the AI assistant. Despite the upload functionality working without issue on the mobile app, attempts on desktop—tested across multiple browsers like Chrome and after clean installs—consistently fail. Network logs and browser DevTools show the file uploads successfully but then hits a wall during OpenAI's backend processing phase, leaving developers unable to use a key feature for code review and debugging.

The user's troubleshooting, shared in a viral post seeking community verification, points to a potentially widespread backend or account-specific issue. The core problem disrupts workflows for software developers who depend on ChatGPT to analyze and explain C# code snippets, creating an inconsistent experience between platforms. This incident underscores the challenges of maintaining feature parity across web and mobile interfaces for complex AI tools and has sparked broader discussion about OpenAI's bug reporting and resolution processes for paying customers.

Key Points
  • Bug prevents .cs file uploads on ChatGPT desktop but works on mobile app.
  • Issue persists across browsers and clean installs, pointing to a backend processing failure.
  • Affects ChatGPT Plus subscribers, disrupting developer workflows for C# code analysis.

Why It Matters

This bug disrupts developer productivity and highlights reliability concerns for paid AI tools used in professional coding workflows.