Skip to main content

How to access blocked attachments in Outlook?

Author: Kelly Last Modified: 2014-11-21

Microsoft Outlook will automatically block some attachments which it detects potentially unsafe. For example, your friend sent you an attachment of an .exe file, when you open the email via Outlook, the attachment is blocked and invalid, and you can only see a warning sentence in the message header. See following screen shot. In this article, I will introduce a guidance to access blocked attachments in Microsoft Outlook.

Office Tab - Enable Tabbed Editing and Browsing in Microsoft Office, Making Work a Breeze
Unlock Kutools for Outlook's free version now and enjoy over 70 features with unlimited access forever
Boost your Outlook 2021 - 2010 or Outlook 365 with these advanced features. Enjoy 70+ powerful features and elevate your email experience!

To access blocked attachments which Outlook thinks potentially unsafe in Outlook, you can do as following:

Step 1: Open the Run dialog box with pressing the Win + R keys in a meanwhile, enter the regedit in the Open box, and then click the OK button.

Step 2: In the popping up User Account Control dialog box, click the Yes button.

Step 3: Now you get into the Registry Editor window, open the Security folder with following paths:

Outlook 2013: HKEY_CURRENT_USER\Software\Microsoft\Office\15.0\Outlook\Security
Outlook 2010: HKEY_CURRENT_USER\Software\Microsoft\Office\14.0\Outlook\Security
Outlook 2007: HKEY_CURRENT_USER\Software\Microsoft\Office\12.0\Outlook\Security

Step 4: Click the Edit > New > String Value in the Registry Editor Window, and then name the new string as Level1Remove.

Step 5: Double click the new string of Level1Remove, then enter the file extended name in the Value data box, and click the OK button.

For example, you want to access blocked attachments of .exe files, just enter the .exe into the Value data box.

Note: To unblocked several kinds of files, just enter all of their extended names into the Value data box, and separate each extended name with semicolon (;), such as .exe; .msi

Step 6: Close the Registry Editor Window, and restart your Microsoft Outlook.

Then you will see the blocked attachment is unblocked, and you can access the unblocked attachment easily. See the following screen shot:

Best Office Productivity Tools

Breaking News: Kutools for Outlook Launches Free Version!

Experience the all-new Kutools for Outlook FREE version with 70+ incredible features, yours to use FOREVER! Click to download now!

🤖 Kutools AI : Instant pro emails with AI magic--one-click to genius replies, perfect tone, multilingual mastery. Transform emailing effortlessly! ...

📧 Email Automation: Auto Reply (Available for POP and IMAP)  /  Schedule Send Emails  /  Auto CC/BCC by Rules When Sending Email  /  Auto Forward (Advanced Rules)   /  Auto Add Greeting   /  Automatically Split Multi-Recipient Emails into Individual Messages ...

📨 Email Management: Recall Emails  /  Block Scam Emails by Subjects and Others  /  Delete Duplicate Emails  /  Advanced Search  /  Consolidate Folders ...

📁 Attachments ProBatch Save  /  Batch Detach  /  Batch Compress  /  Auto Save   /  Auto Detach  /  Auto Compress ...

🌟 Interface Magic: 😊More Pretty and Cool Emojis   /  Remind you when important emails come  /  Minimize Outlook Instead of Closing ...

👍 One-click Wonders: Reply All with Incoming Attachments  /   Anti-Phishing Emails  /  🕘Show Sender's Time Zone ...

👩🏼‍🤝‍👩🏻 Contacts & Calendar: Batch Add Contacts From Selected Emails  /  Split a Contact Group to Individual Groups  /  Remove Birthday Reminders ...

Instantly unlock Kutools for Outlook with a single click—permanently free. Don't wait, download now and boost your efficiency!

kutools for outlook features1 kutools for outlook features2



Comments (4)
No ratings yet. Be the first to rate!
This comment was minimized by the moderator on the site
>  0Key… <
> After some research <
 ̄Y^Y^Y^Y^Y^Y^Y^Y^Y^Y^Y ̄

...I realized that this I should have done creating a section with "String" here:

Much respect❗
This comment was minimized by the moderator on the site
I press on outlook and it comes up with auto discover?? I really need help, how do I get it to work?
This comment was minimized by the moderator on the site
Wow - very helpful.

This comment was minimized by the moderator on the site
It works, thank you for this great tip!
There are no comments posted here yet
Leave your comments
Posting as Guest
Rate this post:
0   Characters
Suggested Locations