Unblock Word

Comodo Pro V3 has started blocking http links to the web from Word documents via Firefox. I suppose it’s the result of something I’ve done but I can’t see what. The same links are still OK from Open Office so the block is on Word.

When I look in Comodo’s Application Monitor I can see Winword.exe, Destination – any, Port – any,
Protocol -TCP/UDP out, Permission – allow. When I turn off Application Monitor the links work OK.

Could you please tell me how I get Comodo to stop blocking http links from Word.