How to Unblock Attachments in Microsoft Outlook

admin | Modified: December 19th, 2018 | Outlook

unblock Outlook blocked attachments

There are security policies in place that ensure protection from unknown and malicious sources. There are measures that are undertaken to prevent hackers from sending files that may contain a viral attachment. Some clients scan a file and if they deem a document suspicious, they place it under blocking. There are files that are sent in by developers in different formats. These may not be recognized by some applications but not by other. It can be a default habit to place them in some kind of quarantine. There are techniques to unblock Outlook blocked attachments. These are simple measures which can be undertaken to ensure that in future if similar files are received, they are not placed in blocking. All the related information has been mentioned in this post. Continue reading to find all the relevant intelligence in context to it.

Possible Techniques to Unblock Outlook Blocked Attachments

Following are some of the ways in which Outlook blocked attachment unblock :

Method 1: Download and Open

  • First, download the file into the personal computer that is being used.
  • Then, save and open the file onto the desktop. Then, print it out. This will help to open a blocked attachment in Outlook.
  • This is a basic methodology that is a basic measure. It can be implemented by any technical or non-technical person and can unblock Outlook blocked attachments.

Method 2: Send A Compressed File

Ask the receiver to email the attachment in a zipped format. There are multiple applications available that can perform this task. They are compressed in multiple file extensions which are not treated as potential threats to Outlook. It can be helpful to unblock blocked attachments in Outlook 2007, 2010, 2013 and 2016. There is also an inbuilt facility to compress folders in Windows 10/8 and 7. It can be done by right-clicking on a directory and selecting to compress it. It will create a .zip file.

Method 3: Rename the File to Unblock Outlook Blocked Attachments

There is the option to rename the attachments to a file format that is recognizable by the email client. This facility can be suggested to the sender to rename the file extension and then send over the document. This will help to open a blocked attachment in Outlook. For example, the .exe file which can be an executable program that can threaten the security of a PC can be changed to .doc. Following steps can be performed at recipients end:

  • First, locate the attachment in the email.
  • Then, right-click on the file and click Copy.
  • Next, right-click anywhere on the desktop and click Paste.
  • Then, right-click on the document and click Rename.
  • Finally, change the file extension to .exe and run the application.

Method 4: Change Security Settings

A user may ask an administrator to make some changes in their account. This could help them to unblock blocked attachments in Outlook 2013 without any problems. There are techniques available to configure security settings to allow a particular mailbox to accept particular attachments.

Alternative Workaround to Fix Outlook Common Issues

There are companies that work just to design software that can help resolve these everyday bugs. They recommend applications but the best solution is to upgrade to better services like the Microsoft cloud. This helps get rid of the frequent troubles that are faced with the on-premise environment.
On such a tool that provides this functionality to import PST to O365 mailbox. It is a simple utility that can even be used by a non-technical businessman. It is compatible with all the latest versions of Windows 10/8.1/8/7/XP/7 or earlier ones.


There are multiple messages that are received every day by users in their mailboxes. Some of them may be from unknown sources or marketing companies. These are directly filtered by the emailing service especially Microsoft. There are techniques for users to unblock Outlook blocked attachments. These are basic measures which can be undertaken to ensure that the files stored within can be recovered. These steps can be implemented in a few proper steps which have been mentioned in this post. There are workarounds available to skip the manual procedure and upgrade to better services. It is to opt for Office 365 cloud. It can be done by using the third-party tool recommended in this post. It is simple, user-friendly and quite effective to get all Outlook 2016, 2013, 2010 and 2007 blocked attachments.

Must Read: Know Why Are my Sent Items Not Showing in Outlook