Hello Bochane,
Thank you for your response.
First question: Yes, the icon always appeared in Task Bar. He disappeared when I installed the Version 2004 only, and yesterday happened what I related in last message.
All the problems I referred appeared after installation of Version 2004.
Second question: I remember that in Browser I could always configure that when I call a Bookmark., it always or not open in a new tab, to not destroy the tab that it was opened. At this moment the open bookmark falls on the active page.
As you can see in the attached file The icon Network is ON to appear in Task Bar.
As I said before, this is Windows my friend!!!
Best regards