How to fix "This message can't be sent because it no longer exists. It can only be discarded. Make sure you copy the content of this message before you discard if you want to use them later"

Question

How to fix "This message can't be sent because it no longer exists. It can only be discarded. Make sure you copy the content of this message before you discard if you want to use them later"

Answer 1

Hi @Mohammed Reza

I'm sorry for late response. Based on your update:

This error typically occurs when:

• You're replying to a group email using a shared mailbox.
• The email draft becomes disconnected from the server, often due to session timeout or sync issues.
• You're using a contact list in the BCC or CC field, especially in Outlook Web App (OWA).

Users have reported this issue after Windows updates, and it seems to affect Outlook Web more than the desktop version

Have you tried to Clear Cached Group Addresses?

• Start a new email.
• Type a few letters of the group name.
• When Outlook auto-suggests the address, click the (x) to remove it from cache.
• Manually retype the full group email address and try sending again

Use “Send Email As” Settings

• Go to Outlook Settings > Send Email As.
• Ensure it's set to your main account, not a shared mailbox. This resolves identity mismatch issues

Try to Switch to Outlook Desktop App

• If you're using Outlook Web, try replying from the Classic Outlook for Windows instead. This avoids web-based sync issues

Let me know if it works with all suggestions above, feel free to reach out if you have any other questions.

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Answer 2

i am not abe to reply on group email this error appears

Answer 3

Hi @Mohammed Reza

Thank you for posting your question in the Microsoft Q&A forum.

We are sorry for the issue you're facing with. For better understand the issue, we hope you can provide the screenshot of the issue.

And message cannot be saved or sent because it no longer exists in Outlook on the web. Can you kindly let me know if you are sending the email from a shared mailbox?

If that is the case, kindly note that there is an incident that was posted to the Service Health with ID EX488107 which might be related to this behavior.

The user experience of this incident is: Users are unable to send email to contact lists from specific shared mailboxes in Outlook on the web.

In the meantime, after researching based on your description, here are some information can be useful:1. Copy and Recreate the Message

Before discarding the message:

• Copy all content (text, attachments, recipients).
• Create a new email and paste the content into it.
• Send the new message instead.

2. Clear Outlook Cache

Corrupted cache can cause drafts to become inaccessible:

• Press Win + R, type:

%LOCALAPPDATA%\Microsoft\Office\16.0

3. Repair Outlook Installation

Use the built-in repair tool:

• Go to Control Panel > Programs and Features.
• Right-click Microsoft Office, choose Change > Quick Repair

https://support.microsoft.com/en-us/office/classic-outlook-not-responding-stuck-at-processing-stopped-working-or-freezes-5c313d04-64af-4441-82d2-44e5a43eee5a

I hope this information is helpful, please let me know if it works for you. If not, we can work together to resolve this.

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