"This operation has been cancelled due to restrictions in effect on this computer."

When clicking on a hyperlink in an e-mail, I get this Message : "This operation has been cancelled due to restrictions in effect on this computer. Please contact your system administrator." I get this message every time that I attempt to use the hyperlink. I am the administrator on this stand alone computer. How do I deactivate this feature so that I activate hyperlinks ?

This is not an Outlook error. The most common cause is a corrupt registry key in Internet Explorer. The registry key found at
HKEY_Local_Machine\Software\Classes\htmlfile\shell\open\command
 is either damaged or corrupt.

To fix it, try resetting Web settings in Internet Explorer. If this does not resolve the issue, you'll need to import the registry key from another computer.

Reset Web Settings

To Reset Web settings in Windows XP:

1. Open  Internet Explorer.
2. On the Tools menu, click Internet Options.
3. Click the Programs tab, and then click the Reset button.
4. Under Internet programs, verify that the correct e-mail program is selected.
5. Click to select the Internet Explorer should check to see whether it is the default browser check box.
6. Click Apply, and then click OK.

If you receive a message when Internet Explorer starts telling you that IE is not currently your default browser, click Yes to make it your default.

If you are using Vista:

1. Open  Internet Explorer.
2. On the Tools menu, click Internet Options.
3. Click the Advanced tab, and then click the Reset button.
4. On the Programs tab, under Internet programs, click Set Programs,  then "Set your Default Programs", select your e-mail program and click "Set this program as Default". Repeat for Internet Explorer.
5. Click OK and close the dialogs.

Note: You need to set Internet Explorer as default and verify the problem is fixed. If you prefer a different browser, you can set it as default later. 

Import the Registry Key

When resetting the web settings doesn't help, you'll need to recreate the corrupt key. The easiest way to do this is by exporting the key from another computer.

To save exporting it from another computer, right click here to download a registry key exported from my computer. Choose Save target as and change the file extension from txt to reg and double click on it to run it.

If you prefer to use a key from a computer you have access to, follow the instructions in You receive an error message when you click a hyperlink in Outlook.

Set Program Access in Control Panel

Windows XP and Vista allow you to control program defaults through Control Panel. If the above methods fail, use this method to set the default browser.

In Windows XP, go to Add and Remove Programs, Set Program Access and Defaults.

In Vista, access the Default Programs applet from the Start menu or Control panel. Click on the "Set program access and computer defaults" (last option) then expand Custom. In "Choose a default web browser", check on the "Internet Explorer" option and click the OK button

Other Causes

You receive the message when:

You receive an error message when you click a hyperlink in Outlook

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