Unable to upload files on my chat gpt plus plan

I paid for the subscription, but I’m unable to upload any files …

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Hi everyone,

I’m experiencing a recurring issue in ChatGPT where I’m unable to upload files or images using the “+” button. This happens randomly throughout the day and only affects specific chats.

In the affected conversations, the “+” button disappears or shows the warning:
“File uploads unavailable.”

Temporary Workarounds I’ve found:

  • Opening a new incognito/private window and starting a brand new chat (without opening the problematic one) often restores the upload button.
  • I also saw @John_WVila 's mention that manually reselecting the GPT-4o model from the top-left dropdown (even if it’s already selected) can fix it. I tried this myself — and it actually worked!

However, once I return to the affected chats, the problem tends to come back — even in incognito mode.

I’m wondering:

  • Is this a known bug?
  • Has anyone else experienced the same behavior?
  • Is there a more permanent solution?

Any insights or suggestions are appreciated. Thanks!

I have the same problem and was told to start new chats but now it is also happening with brand new chats

Same issue here - Happens with new chats too. Might as well cancel my subsription - seems this is the case now for over 30 days and still not fixed. What a bunch of losers.

I empathize with your frustration, as I have encountered similar issues. While the tool previously functioned effectively for me, it now fails to attempt extracting data from PDFs. Instead, it automatically displays an error message indicating that the file upload has been unsuccessful. Furthermore, I am concerned about the quality of ChatGPT 4o. It appears that I am utilizing the free version, yet it erroneously displays that I am subscribed to version 4o, which I have paid for. As an ongoing subscriber to this plan, I feel deceived and believe that I am being defrauded. I have verified OpenAI’s status, and it states that the service is fully operational. If this is indeed the case, it is reasonable to assume that I am being unjustly charged for a service that does not provide the quality I paid for.