Cara Mengatasi error di Outlook, Word or Excel "This operation has been cancelled due to restrictions in effect on this computer”

Step 1. Set your default Internet browser in Control Panel.

First make sure, that your favorite browser is assigned as the default browser to handle hyperlinks. To do that:

In Windows XP, go to Start > Control Panel and open Set Program Access and Defaults.

• In Windows 7: go to Start & open Default Programs.
• In Windows 8: Press the Windows    + R keys to load the Run dialog box, typeDefault Programs & press Enter.
• Click the Set program access and computer defaults option and expand Custom.
• Choose the default Internet browser to open hyperlinks (e.g. Internet Explorer, Chrome, Firefox) and choose OK.*

* Note: If the default browser was already the one that you want, choose another browser and then try to open Outlook links.

• Now open Outlook and try to open a hyperlink. If the problem occurs continue to Step 2.

 Step 2: Change HTML association in registry.

• Open Registry Editor: To do that:
  • Simultaneously press “Windows” + “R” keys to open the RUN window.
  • In “RUN” window “Open” box,  type: regedit
  • Press Enter.
• At the left pane, press the “+” sign and navigate to this subkey:
  • HKEY_CURRENT_USER\Software\Classes\.html
• Now double-click at the (Default) String at the right pane and set the value data tohtmlfile .
• 
• Perform the same operation and modify the Default string Value to htmlfile in these subkeys:
  • HKEY_CURRENT_USER\Software\Classes\.htm
  • HKEY_CURRENT_USER\Software\Classes\.shtml
  • HKEY_CURRENT_USER\Software\Classes\.xhtml
• Close Registry editor and restart your computer.
• Try to open hyperlinks.