Summary: Outlook is a popular email client that many professionals and individuals use for communication. Whether you need to send reports or invoices or merely attach some multimedia files, in today’s world, almost everything you need to send is shared via an attachment. However, many people experience a common problem: received attachments not showing in Outlook.

This issue can arise in any version of Outlook in which it can be Outlook 365, 2021, 2019, 2016, or any older. It occurs when the attachments vanish from the received emails, display as greyed, and do not open at all. Apart from the interference in the continuity of work, it can also result in data loss as the crucial files will not be accessible.

This guide will take you to the step-by-step solution for why received attachments not showing in Outlook. How to fix it manually, and finally an ultimate technique to manage attachments that result in a permanent solution.

Also Read: Save Outlook Attachment to Desktop Automatically

Reason Behind Not Showing Attachments

The reasons for the issue can be various from Outlook settings to interference from antivirus programs. Among the most frequent ones are the following:

• Firstly, for safety reasons, Outlook can block some attachments such as.exe,.bat, or.zip, and you may not see them at all.

• Secondly, if the PST or OST file was corrupted, the attachments associated with the emails that were stored in such a file should not be shown too.

• Thirdly, the security software can keep attachments that they think are unsafe in a special quarantine, due to this you may get invisible attachments.

•  Fourthly, the use of add-ins that disrupt the usual loading of emails can prevent you from viewing the attachments.

• Temporary files for attachments are stored within the user’s Outlook.

• A full or corrupt cache can cause the attachment not to display accurately. 

• When your account does not sync properly, attachments may fail to download from the mail server.

• Sometimes, customized or filtered view settings can inadvertently hide the attachment.

Manual Ways to Fix Received Attachments Not Showing in Outlook

Another manual fix with step-by-step actions that may help restore attachments on Outlook. 

#1. Start with Checking the Attachment Block List 

As Outlook might have reasons to consider Attachment unsafe.

1. Open Outlook and choose File > Options.
2. Proceed to the Trust Center > Trust Center Settings.
3. Select Attachment Handling.
4. If the default file is blocked, review the list and set the necessary format. 

This option may help if the attachments of this format are blocked by default.

#2. Temporarily disable the Antivirus or Firewall. 

Some antivirus tools scan incoming mail and place the attachments in quarantine.

Solution:

• Temporarily turn off real-time email scanning.

• Start Outlook and see if the attachments are visible.

• The attachments become visible, excluding Outlook from the antivirus blocked URLs.

• It might hide the attachments of certain extensions.

#3. Clear Outlook Cache folder

Very often, cache clearing helps to make attachments visible. Clearing cache often resolves the problem.

• Close Outlook completely.

• Press Windows + R and type:

%localappdata%\Microsoft\Outlook

• Delete the RoamCache folder.

• Reopen Outlook and check the Attachments. 

#4. Disable Problematic Add-ins

Such add-ins as Adobe PDF or security plugins may cause interference with the presentation creation.

• Go to File > Options > Add-ins.

• Choose COM Add-ins > Go.

• Uncheck unnecessary add-ins and restart Outlook.

If the Attachments appear again, one of the disabled add-ins caused the problem.

#5. Repair Outlook Data Files

Most of the time, missing attachments are caused by corrupt PST or OST files. This is how to repair a PST using the Inbox Repair Tool.

Where to find the tool:

C:\Program Files (x86)\Microsoft Office\root\OfficeXX

• Open SCANPST.exe.

• Select the PST/OST file by clicking Browse.

• Begin scanning by clicking Start.

• Once finished, Reload Outlook and confirm the cause.

#6. Check Outlook View and Filter Settings

Occasionally, the cause is a custom view that filters out the attachment. Here is how you can do it:

• Open Outlook.

• Click View > View Settings > Filter.

• Remove all filters, and then click OK.

• Check if the getting attachments have resolved the problem.

#7. Recreate the Outlook Profile

If none of the above fixes have worked, recreate your Outlook profile.

1. Going to the control panel >Mail > Show Profiles is a way to do this.

2. Click Add and create a new profile, and then reconfigure your email account.

3. Start Outlook using the new profile.

4. If your old profile was corrupted or incorrectly set up, this would help limit the problem.

Professional Solution to Manage Received Attachments in Outlook Efficiently 

When attachments do not appear or become too hard to handle by hand, there is also a professional way for that. Using SysTools Outlook Attachment Extractor Software may assist Outlook users to extract, organize and clean attachments from PST, OST, and BAK files.

Key Features:

• Extract Attachments from PST, OST files and BAK Files.

• It works even without installing Outlook.

• Save attachments from many Outlook emails in one go.

• Extract by date range, size, file type, sender.

• Keep the original email structure.

• Compatible with Outlook 365, 2021, 2019, 2016 & more.

• No data integrity violation or altering of original data.

Conclusion

Received attachments not showing in Outlook can be time-consuming and annoying. Although the manual methods, such as repairing PST files, disabling add-ins, and clearing cache, help to solve the issue. But, they may not be efficient for individuals dealing with large Outlook databases. So, for that use our above mentioned tool to manage attachments.