Trust Sender and Show Blocked Content Buttons are Not Working

Question

We have cleared our browser cookies and cache, and the Trust Sender and Show Blocked Content Buttons are still not working. We have opened Outlook in Firefox, Chrome, Edge and Brave Browsers, and the same problem exists.

Answer 1

Experiencing the same issue. All mailboxes on our exchange server.

It does work in the background but clicking the buttons does not clear the message - it just eventually disappears on the email an hour or so later.

So Microsoft have yet again broke something.

Answer 2

Dear info chiangraitimes.com

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Thank you for your reply and patience while I investigated the issue with the "Trust sender" and "Show blocked content" buttons not working in Outlook Web App (OWA).

As a moderator, I’ve tested this issue in my own environment and tried my best to reproduce what you’re experiencing. When I open an email from a sender who isn’t on the Safe Senders list, those two buttons show up. But when I click them, nothing seems to happen, and there’s also no feedback or visible change.

However, after I refresh the page and go back to the email, the buttons disappear, then I noticed the sender is automatically added to the Safe Senders list. So, even though it looks like the buttons aren’t working, the action is actually happening in the background. Could you please check your own Safe Senders list in Outlook Web App to see if the sender has been added after you click the button and refresh?

Based on this, it seems like a bug or UI glitch in the Outlook Web App interface. However, accessibility and user experience are priorities, I strongly encourage you to share your experience through Help > Feedback in the Outlook app or by visiting Microsoft Feedback Portal.

If my response was helpful, even in part, I’d be grateful if you could mark it as the Accepted Answer. It helps other affected users find this thread more easily and acknowledges the support you received.

Answer 3

Hi info chiangraitimes.com

Thanks for reaching out to Microsoft Q&A forum.

I know how frustrating it can be when something as simple as trusting a sender or displaying content doesn’t work the way it should.

To better understand the situation and tailor the guidance to your setup, could you help confirm the following: 

• Are you using a personal Outlook account (like @outlook.com) or a Microsoft 365 work/school account? 
• When you click “Trust Sender” or “Show Blocked Content”, do you see any error messages, or is there simply no response? 
• Could you share a screenshot of the affected email (kindly blur or crop out any sensitive info)?

Meanwhile, please refer to these suggestions as workarounds: 

• Open Outlook Web in an incognito/private window to rule out interference from extensions or cached data.
• If you have access to the Outlook desktop app, try viewing the same message there. If the options work fine in the desktop version, the problem is likely browser-specific. 
• Some browser extensions, especially AdBlock and uBlock Origin, are known to interfere with Outlook Web features. Try disabling these (if installed), then refresh the page. Also, check if pop-up blockers or other content blockers are running. For further information: Supported browsers for Outlook on the web and Outlook.com 
• Ensure that the senders you want to trust are not listed in the Blocked Senders list and manually add the sender to your Safe Senders list so content is always shown in future messages: Add recipients to the Safe Senders List in Outlook

I’ll do my best to support you with practical steps and connect you with the right resources. I hope some of these steps help move things in the right direction.

I'm looking forward to seeing your response soon. 

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Answer 4

Our email is 365 for our business