ChatGPT File Upload Error: Fix Underway for Users

OpenAI has acknowledged a widespread file upload problem affecting ChatGPT users. Their engineering team has applied a mitigation to fix elevated error rates across the platform. Many users reported an "Unknown error occurred" message when trying to upload files like PDFs and documents. This issue has been affecting both Pro and Plus plan subscribers, with some free accounts reportedly working fine. Temporary workarounds include compressing documents into a single ZIP archive or using the mobile application. Some users also found success by uploading from a different device. OpenAI is currently monitoring the recovery process. The bottom line is that a fix is underway for this frustrating file upload problem.