XnView Software

Ckit,

Thanks,
Actually I feel rather stupid.
I laboured with this for ages but gave up in frustration.
Of course I tried your exact method initially & it failed, then the anniversary update & still no joy.
Then 20 mins after posting for help I tried again & it worked.
Don't ask me what or why, I ...

I have used XnView for years; it's a great program!

Now i have "upgraded" to Win 10 (with Anniversary edn).
Now it seems I am unable to make XnView my default image viewer.

I have tried every way I can think of, but to no avail.

Please someone:
Is it possible to make it the default & If so how.