Whats going on with copilot?

Question

I tried to send messages on copilot, but I'm always getting a message saying 'failed to send.' Especially when im working on a story. Please help me.

Answer 1

Hi Troy Andrew,
Thank you for reaching out to us. We understand the issue you are experiencing and are happy to assist.

Issue: “Failed to send” messages in Microsoft Copilot when writing long stories

This issue is commonly related to input length limits or a corrupted chat session.

What usually causes it:

• Long story drafts exceed Copilot’s message size limits
• The current conversation becomes stuck after many long messages
• Browser session issues (expired session, cache, extensions)
• Content filtering triggered by specific wording

Recommended fixes:

1. Start a new chat (most effective). Copy your text and continue in a fresh conversation.
2. Split long content into smaller sections (2–3 paragraphs per message).
3. Refresh the page or sign out/in, then try again.
4. Try Incognito mode or another browser and temporarily disable extensions.
5. If it still fails, rephrase the content and send shorter messages.

This is a known Copilot behavior with long or complex inputs and does not indicate an account issue.
I hope the information above is helpful. If you have any further questions, please feel free to let us know.

If this answer was helpful, please click Accept Answer and Upvote to help others in the community.

Best regards,
Nam

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