Trying to open a hyperlink in Microsoft Office Outlook or Microsoft Office Word – you receive the following error message and subsequently cannot open the hyperlinks:
This operation has been cancelled due to restrictions in effect on this computer.
Cause: Upgrading Internet Explorer from a previous version or uninstalling Google Chrome can corrupt dependent registry keys.

Following the simple steps below will help fix the issue:

Open a Command prompt as Administrator on Windows Vista or Windows 7. Then copy and paste the following info line by line – pressing the enter key on your keyboard to initialize each command:

REG ADD HKEY_CURRENT_USER\Software\Classes\.htm /ve /d htmlfile /f
REG ADD HKEY_CURRENT_USER\Software\Classes\.html /ve /d htmlfile /f
REG ADD HKEY_CURRENT_USER\Software\Classes\.shtml /ve /d htmlfile /f
REG ADD HKEY_CURRENT_USER\Software\Classes\.xht /ve /d htmlfile /f
REG ADD HKEY_CURRENT_USER\Software\Classes\.xhtml /ve /d htmlfile /f