But that still doesn't answer the question as to why IE starts itself.
:
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I have just removed IE from my firewall permission list. Now to post this missive I must let it access the net again
There are some links that can actually force IE to be used as the browser, some specify IE rather than the default browser, which is often why it happens. There were links in avast that opened IE if you clicked on them and we asked for those to point to the default browser rather than IE, but there are many other programs with the same issue.
For instance open the avast help file, the Technical Support page and click on the avast forums link or the FAQ offline page, click the FAQ link and those for me opens IE (spit) even when Firefox is open. This is a real pain, in the rear, given the many security issues with IE and the fact that avast is meant to be securing my system
not giving malware a chance by using IE.