Attachments are not showing in Outlook on my computer, but they do show in Outlook on my phone.

Hello Nothing2SeeHere,

Thank you for writing to us here in the Microsoft community. 

I understand how incredibly frustrating and disruptive it must be to encounter an issue like this, especially when it affects your ability to access important attachments in Outlook. It’s even more disheartening when you turn to support channels expecting a solution, only to find that others are facing the same problem without any clear guidance or resolution.

We deeply regret that this issue has caused you such frustration, and I want to assure you that your concerns are being taken seriously.

Microsoft usually suggests the following troubleshooting steps when users face a situation like this. I'd recommend cross-checking if you've already tried any of these before moving forward:

• Check the Email Format: Sometimes, emails in Rich Text Format (RTF) can cause issues with attachments. Ask the sender to resend the email in HTML or Plain Text format.
• Clear the Outlook Cache:
  • Cached files might be causing the attachments to not display correctly.
  • To clear the cache, follow these steps:
    • Close Outlook.
    • Navigate to C:\Users\[Your Username]\AppData\Local\Microsoft\Outlook.
    • Delete all files in the Offline Address Books and Outlook folders (don't worry, these will be recreated by Outlook).
    • Restart Outlook.
• Disable Add-ins:
  • Some add-ins might interfere with attachments.
  • In Outlook, go to File > Options > Add-ins.
  • Click on Go next to "Manage: COM Add-ins".
  • Uncheck all add-ins and restart Outlook to see if the attachments appear.
• Update Outlook:
  • Ensure that Outlook is up to date. Go to File > Office Account > Update Options > Update Now.
• Check Security Settings:
  • Sometimes, Outlook's security settings may block certain attachments.
  • Go to File > Options > Trust Center > Trust Center Settings > Attachment Handling.
  • Check if any attachments are being blocked.
• Check Internet Connection:
  • Ensure you have a stable internet connection, as issues with syncing could prevent attachments from loading on your computer.
• Recreate the Outlook Profile:
  • If none of the above works, try creating a new Outlook profile.
  • Go to Control Panel > Mail > Show Profiles.
  • Click Add, create a new profile, and set it as the default.

If above steps do not work, please provide more information so that we can work together to address it effectively.

1. Please share your account details and a screenshot of your subscription. Are you using a Microsoft 365 business account or a personal account like outlook.com or hotmail.com?
2. Please confirm if you are using Classic Outlook or New Outlook.
3. Are you experiencing the issue with only Outlook on the Web (OWA) or in the desktop application?
4. Are you unable to open any kind of attachment, or is it a particular attachment that's causing the issue?
5. Could you please share a screenshot of what happens when you try to open the attachment?
6. Please share a screenshot of the version of the Outlook app you're using.
7. Furthermore, could you please share with me a detailed screenshot page of your current Office version number? Here is the article to know the steps: About Office: What version of Office am I using? - Microsoft Support
8. Please open the command prompt as administrator and get me the output for Dsregcmd /Status
   • To get the log, type CMD in the Windows search box. It will show the Command Prompt. Then, Run as administrator.
   • A new window will appear. Please type Dsregcmd /Status and press Enter.
   • It will provide an output. Please copy the output into a text file and share it with me.
   Also, collect the event logs from the affected machine before collecting the log, please reproduce the scenario. On Windows search write Event Viewer, Select Windows Logs > Application > Save All Events as Also, from Applications and service logs > Microsoft > Microsoft Service Alerts > Save All Events as

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I'll wait for your next update on this in a private message. I will provide you with further guidance accordingly.