Have a friends computer when you bring up some software, any in fact and double click on the web links say like to the software home page it want access the internet. In internet exployer it works fine but not from a link sent in email or instant messenger or on any software on the computer. Running XP Pro fully updated and AVG antivirus. Anyone have any ideas on this one. Thanks
See if this works for the links.
Start Internet Explorer
Select the Tools > Internet Options menu
Select the [Programs] tab
Look for a checkbox labelled "Internet Explorer should check to see whether it is the default browser"
If this checkbox is not ticked, then this may be the cause of the problem, so tick it!
Click OK
Close Internet Explorer
Now try a link in your software or mail program.
My thinking is the same as that of Humpty. It sounds like something is unregistered in Internet Explorer.