Every time I log onto my computer, I have a box which says: Switch user.
How do I get rid of it?

It says: This action cannot be completed because the other program is busy. Choose "Switch to" to activate the busy program and correct the problem.
Underneath that is a box with "Switch to" and "Retry"

How do I get rid of this please?

I might have a solution for you. Stand by.

I will be grateful, thanks.

No joy then?