problem attaching excel document in email

Question

problem attaching excel document in email

Dean Tompkins 0

Hello

i am trying to attach an excel file into my email but i only receive "unable to download" error message. The cloud on the document never moves to a checkmark any longer

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3 answers

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Answer 1

@Dean Tompkins
You tagged your Question as Outlook | Web but if you are actually using Classic Outlook for Windows, you may have run into a known bug. Is your problem similar to the one described in this post?

Can't download OneDrive files as an attachment to Outlook emails.
https://learn.microsoft.com/en-us/answers/questions/5866863/cant-download-onedrive-files-as-an-attachment-to-o

If so, Microsoft is aware of the problem and is rolling out a fix:

Gabe Bratton Microsoft Employee • Moderator
Apr 24, 2026, 8:53 AM
this issue should now be fixed. We got it escalated yesterday and it got fixed last night.

If you are still having the problem you need to contact Microsoft Support to see why the fix was not applied to your tenant.

MS 365 - Subscriber Support
https://www.microsoft.com/en-us/microsoft-365/support

All others
https://support.microsoft.com/home/contact

Answer 2

Victor1-V 9,375 Microsoft External Staff Moderator

Hi Dean Tompkins,

The Q&A Assist reply is directionally correct. Outlook.com does have an official workaround for cases where emails with attachments may fail, which is to send the file as a OneDrive link instead of a traditional attachment. The same support content also explains that if the file is not already in OneDrive, you can use Upload and share, then choose Share link. https://support.microsoft.com/en-us/office/fixes-or-workarounds-for-recent-issues-on-outlook-com-8c95d913-d96b-4065-9171-e1fa44b03ff5

Because your screenshot mentions “unable to download” and the cloud icon never changes to a check mark, it would also help to confirm whether this happens with only this Excel file or with all attachments, and whether the file is stored on the device or already in OneDrive. The support article also notes that Outlook.com has a 25 MB message size limit, while a OneDrive link does not count toward that email size limit. https://support.microsoft.com/en-us/office/unable-to-attach-files-in-outlook-com-9e1f02c0-ac68-4e7b-b6fe-7a4075976e42

If you have not already tried the workaround, please test it this way:

Create a new message in Outlook.com.
Select Attach. If the Excel file is already in OneDrive, choose OneDrive. If the file is local, choose Upload and share.
After selecting the file, choose Share link so the file is sent as a OneDrive link instead of a direct attachment.

If that works, it would point more toward the current attachment path rather than a problem with the Excel file itself. If it does not work, please reply with these details so the issue can be narrowed down further:

Is it only happening with one Excel file or with all files?
What is the approximate file size?
Does the same issue happen in a new message and not only in a reply?
Does it happen in another supported browser as well?

Please note that this is a user-to-user forum, so we cannot check the mailbox or service from the backend, but the details above would help determine whether this is the documented Outlook.com attachment issue or something more specific. I hope this helps.

Victor1-V 9,375 Reputation points Microsoft External Staff Moderator

2026-04-23T13:34:40.1566667+00:00

I hope you are doing well, Dean Tompkins!

I'm following up to check if you've had a chance to look over my reply.

Please feel free let me know if you need any further assistance. I look forward to hearing back from you.
Dean Tompkins 0 Reputation points

2026-04-23T15:13:50.4066667+00:00

thank you. i am still having problems attaching excel or word to my emails. I used to be able to then within last few weeks i have not.

using a link is not a good option either as the recipient noted need a login
Victor1-V 9,375 Reputation points Microsoft External Staff Moderator

2026-04-24T13:11:07.25+00:00
Thank you for the update, Dean Tompkins.

Since this is happening with both Excel and Word files, it no longer looks limited to one document type.

On the link point, a OneDrive file does not always have to require sign-in. In OneDrive, when you use Copy link, you can choose link permissions, and the Anyone setting gives access to anyone who receives the link. https://support.microsoft.com/en-us/office/share-files-and-folders-in-microsoft-onedrive-9fcc2f7d-de0c-4cec-93b0-a82024800c07

So, if you want to test that once more, the important part would be to change the link setting from a restricted/private share to Anyone with the link before sending it.

If normal attachments are still failing and the OneDrive workaround is not acceptable for your case, the next supported step is to contact Outlook.com support from inside Outlook.com itself:

Go to Outlook.com and sign in.

Click the Help icon (question mark) in the top right corner.

In the Help pane that opens, type a brief description of your issue (e.g., "cannot send emails"), then press Enter.

Scroll down the page until you see "Still need help?", click Yes.

Select "Chat with a support agent in your web browser."

Review the description of your issue and confirm your email address (ensure it's an email you can access).

Click Confirm to create the service request and then Start chat to connect with an agent.

I hope this clarifies the next steps.

Answer 3

In Outlook.com there is a known issue where sending emails with attachments can fail. As a workaround, send the Excel file as a OneDrive link instead of a traditional attachment.

Use these steps in Outlook.com:

Reply, Forward, or create a new email message.
Select Attach.
- If the Excel file is already in OneDrive, choose OneDrive and select the file.
- If the file is on the computer and not yet in OneDrive, choose Upload and share, then select the Excel file to upload.
After selecting the file, choose Share link so the email sends a link to the file instead of attaching it directly.
Alternatively, open the file in OneDrive or an Office app, use Copy link, and paste that link into the email body.

This avoids the direct attachment path that is currently failing and should let the message send successfully.

References:

Unable to attach files in Outlook.com

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problem attaching excel document in email

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