CodeTwo Attach Unblocker

CodeTwo Attach Unblocker

Read and open blocked or disabled attachments

CodeTwo Attach Unblocker

CodeTwo Attach Unblocker allows fast and convenient configuration of Microsoft Outlook to unblock attachments blocked by Outlook by default (for example, .exe, .url, .reg files). The program is setup directly in Microsoft Outlook, which ensures quick and convenient editing.

CodeTwo Attach Unblocker Main Window


From Microsoft Office 2000 with Service Pack 2 version (E-mail Security Update) onwards, Outlook has not allowed opening some attachment types due to safety reasons. These attachments are considered to be potentially dangerous as they may contain viruses or can damage the system. A dangerous attachment can neither be opened, nor saved on the hard disk. It will also be deleted while attempting to forward the message. Therefore, it is not possible to read such an attachment in Outlook. CodeTwo Attach Unblocker will enable you to read all previously blocked attachments.

Unblocking attachments

In order to choose the attachment types that should not be blocked, in Outlook 2007 and earlier versions, click on the Attach Unblocker button in the main toolbar; in Outlook 2010 click on the Attach Unblocker button on the ribbon. In the text field, enter the file extension (the attachment type) you wish to unblock and click Add. The file extension will be added to the Unblocked attachments list and after restarting Outlook attachments of that type will no longer be blocked and you will be able to save them on your hard drive.

Outlook Unblocked Attachments

More than one type of attachment can be entered in one edit field by separating the types with a semicolon. The types are not case sensitive.

If unsafe attachments are blocked by Outlook, you cannot access them. Attachments cannot be viewed, opened, forwarded or saved to disk. You need to use CodeTwo Attach Unblocker to unblock and access attachments.

Outlook Blocked Attachments


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Product information

Product name: CodeTwo Attach Unblocker

Supported platforms

Windows 10(1) / 8.1 / 8 / 7 / Vista / 2003 / XP SP3 / 2000
Microsoft Outlook 2016 / 2013 / 2010 / 2007

Support for 32-bit and 64-bit versions

(1) If the program doesn’t work after upgrading to Windows 10 from Windows 7 or 8.1, you need to reinstall it.

Windows 10 Windows 2000 Windows 7 Windows 8 Windows 8.1 Windows Server 2003 Windows Vista Windows XP

Product description

CodeTwo Attach Unblocker lets you decide which attachments should not be blocked by Microsoft Outlook.

Version details

  • Latest Version:
  • Size: 16.3 MB

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