Error - Failed to Upload Attachment

Question

Received this error - Admin said he could not fix:

Diagnostic information for administrators:

---

Error is [0x80070057-0x00000000-0x00000000].

Failed to upload attachments to server (error 0x80070057).

Submit-Message failed: message id(13), failure enum(29), HResult(0x80070057), EC(0).

Answer 1

Hi guys,
Anyone found a solution to this issue? I'm having a few users with the same problem, only when they try to forward an email with a PDF attached. The email isn't processed at all on mimecast, and I cannot see it on Exchange as well.

Have you been able to find any workaround or solution?

Answer 2

I have a user with the exact same error occurring.

• AzureAD user with M365 exchange
• Win10 20H2 (19042.928)
• Outlook Click-to-run (v2008 build 13127.21506)
• User can send and receive emails
• User can reply to emails
• Some emails can be forwarded, some not.
• Those emails that fail to forward return the error below.
• About to test issue on web client but believe it will work based on seeing this for another user a few months back.
• Will rebuild laptop to rule out issues with profile and outlook client.
• As this is occurring across multiple customers I think Microsoft should review further.
• @JT you are certainly not alone in seeing this fault

-- error returned --
Diagnostic information for administrators:

---

Error is [0x80070057-0x00000000-0x00000000].

Failed to upload attachments to server (error 0x80070057).

Submit-Message failed: message id(1), failure enum(29), HResult(0x80070057), EC(0).

Issue seems to likely be local user profile or outlook app

Answer 3

Sounds like others in the same office may be having the same issue. The one user I'm working with is on current channel, updated on the 13th from release the 12th. I'm not convinced this isn't an office update issue. Going to try to roll her back a couple versions and prevent updates and see if that helps her.

Answer 4

It is the same issue, as it is the same error. There is the ndr with the error previously described. There are no internet headers, as it's not making it outside the o365 server. I'm not interested in spending more time on it.

Answer 5

Hi　@JT ,
Are you a colleague of the person posting or other users who meet the same issue in the forum?
Regarding your test results, I understand that emails with attachments can be sent directly to external recipients and can be sent successfully. But if you forward a mail with attachments to internal recipients, an error will occur. Can it be considered that this error occurs only when forwarding emails with attachments?　If my understanding is wrong, please correct me in time.
Only one user have this issue or all users have?
Did the user change any settings before this issue occurred?
How do you conduct these tests? Is it through OWA or Outlook client, or both have the same issue.
Please try to log in the problem user on another computer and forward the email with attachment
After the email fails to be sent, is there an NDR generated? If so, please share the complete DNR with us. In addition, are there any other pop-ups or errors generated? Please pay attention to covering your personal information.

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