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When I clicked to open links in my outlook I encountered this error :

“This operation has been canceled due to restrictions in effect on this computer. Please contact your system administrator”.

I searched and most of the solutions were for resetting default programs. Change default programs and reset IE to default . None of them did help me .

I found new solutions here.

The second solution about changing a registry key helped me. but I found the html key not in HKEY_CURRENT_USER but in


> Software > Classes

find .htm & .html

in both change the Default String values ( in my case there were Opera.html ) to HTMLFile

save and close and after restarting outlook , links opens fine in IE. 🙂


Start !

Posted: August 9, 2008 in Uncategorized

Hi All !

At last I created my sharepoint blog here and I hope I could create helpful posts for u ! 😉 I’m also should be thankful to my friend Hadi Dolatabadi to encourage me creating this blog and introduce me the as a good blog service.