Unlocking Outlook’s Blocked Content

Outlook has this lovely tendency to lock out certain file types from entering your mailbox. This is a fantastic security feature, providing you aren’t ever planning on receiving executable files (.exe), registry entries (.reg) or Access databases (.mdb) via your mail. If you need a certain file type unblocked, read on!

  1. Click on the ‘Start’ button and select ‘Run’. Type ‘regedit’ in the text box and click ‘OK’.
  2. Browse to HKEY_CURRENT_USER\Software\Microsoft\Office\10.0\Outlook\Security (The ‘10.0’ will differ according to your version of Office. Eg. it will be 9.0 for Office 2000 SP3 and 11.0 for Office 2003)
  3. Add a new string value named “Level1Remove” into the Security subkey.
  4. For the value of Level1Remove, enter a semicolon-delimited list of file extensions. For example, entering .mdb;.urlas your string value would unblock Microsoft Access files and Internet shortcuts. Note that the use of a leading dot was not a requirement back in the day, however, new security patches may require it. If you are using “mdb;url” format and extensions are blocked, add a dot to each extension. Another thing, please do not put any spaces in anywhere. This will not work too well at all with spaces.
  5. Close and re-open Outlook. All changes should now be in effect.

Just a subtle warning, some content is blocked for a reason, so use this hack with severe caution!

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8 Responses to “Unlocking Outlook’s Blocked Content”

  1. Fanie Says:

    Thanks. This saved my skin.

  2. Dcr Says:

    Finally got access to my bat files in my emails again.
    Many thanks.

  3. Pim Says:

    Thanks from me too!
    Your tip actually works, in contrast to the tip on Microsoft’s site.

  4. Viagra Says:

    Wow! what an idea ! What a concept ! Beautiful .. Amazing …

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  5. Schedule Says:

    Maybe you could change the webpage name title Unlocking Outlook’s Blocked Content LPF Computer Tips and Information – Windows XP, Vista and Linux to more better for your subject you write. I enjoyed the post all the same.

  6. bogdan Says:

    I got it to work in windows 7 too. thank you!

  7. Sami Says:

    Thanks a lot !!!!!!!! you saved me… I appreciate your profesionalism . Regards,

  8. Business Registration UAE Says:

    Helpful info. Lucky me I discovered your web site
    by chance, and I am surprised why this accident did not took place
    earlier! I bookmarked it.


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