Hi Zurga,
thanks for your fast response. Today I tried again and am wondering what happened meanwhile. IT WORKS!
There was an update from Windows to 2004 19041.928 yesterday, maybe that solved the problem.
My NAS Storage is attached via "net use", i.e. samba and that seems to be no problem.
So I can check if it's worth to get rid of myheritage and change to ancestris. I'm sure, I'll be popping up soon here with new questions.
Georg