Both Web and Desktop Outlook cannot open attachments and display images

Question

Both Web and Desktop Outlook cannot open attachments and display images

Yu Jiang 0

Hello, the outlook cannot show the images and cannot open/download attachment. Please see the screenshots below.

I tried to log out my account and re-login, but it does not help. Could you please help check and let me know how to fix this issue? Thanks!

Screenshot 2026-09-01 231616

Screenshot 2026-09-01 231646

Yu Jiang 0 Reputation points

2026-09-02T03:22:54.03+00:00

The attachments and images in all emails cannot be opened and displayed.

1 answer

Your answer

Yu Jiang 0 Reputation points

2026-09-02T03:22:54.03+00:00

The attachments and images in all emails cannot be opened and displayed.

Answer 1

Teddie Dang 1,365 Independent Advisor

Hi @Yu Jiang

Since the issue occurs in both Outlook on the web and the Outlook desktop application, and affects attachments and embedded images across all emails, it does not appear to be limited to a specific Outlook client.

To help narrow down the cause, could you please confirm the following?

Is the issue affecting only your account, or are other users in the same organization experiencing the same behavior?
Does the issue occur with attachments from both internal and external senders?
When you select Save As for an attachment, are you able to save it successfully, or does the download fail as well?
If possible, could you connect the computer to a different network, such as a mobile hotspot, and check whether the issue persists?
Does the issue also occur when accessing Outlook on the web using an InPrivate/Incognito browser window?
When did the issue first start?

Additionally, if this is an Exchange Online account, please be aware that there is currently an ongoing Exchange Online service incident EX1464935 involving an authentication component issue. Microsoft has reported that the incident may cause degraded functionality and mailbox-related issues. User's image

I cannot confirm at this stage that EX1464935 is the cause of the attachment and image issue you are experiencing, but given that the issue affects both Outlook on the web and the desktop application, it is worth checking whether the behavior is related to the ongoing service incident.

Deleted

This comment has been deleted due to a violation of our Code of Conduct. The comment was manually reported or identified through automated detection before action was taken. Please refer to our Code of Conduct for more information.
Yu Jiang 0 Reputation points

2026-09-02T06:55:44.83+00:00
Hello, thanks for your reply.

The issue only affect my account, other users in same organization not encountered same issue.

Yes. and the screenshot in email body are also not displayed. Even attachments/screenshot in emails I sent myself cannot be opened/displayed.

I cannot download any attachment now.

I cannot seen the screenshots in email from yesterday, and today, the attachment cannot open/download.
Teddie Dang 1,365 Reputation points Independent Advisor

2026-09-02T07:41:36.45+00:00
Hi @Yu Jiang

Thank you for the additional information. Could you please try the following tests?

If possible, sign in to your mailbox from another computer using Outlook on the web and check whether the same issue occurs.

Try accessing your mailbox from a different network, such as a mobile hotspot, and check whether attachments and embedded images are displayed and can be opened successfully.

Based on the timing, it is possible that this could be related to a temporary service-side issue. However, since the issue appears to affect only your account, it would be helpful to complete the tests above first.

If the issue still persists after these tests, I recommend contacting your IT administrator and asking them to raise a support ticket with Microsoft Support through the Microsoft 365 admin center, so the issue can be investigated further.