Why can't I access Analysis Services from Excel?

Question

excel

Good afternoon.
Recently updated Windu at work (top ten) and after that do not turn to Analysis Services from Excel. When I try to select some of the slices, I get the error "Data source initialization failed", I can't create a new connection either - it swears. At the same time, from SQL MS, I calmly work with the club, I can view browsers, in general, there is access to the service. I have already tried everything and installed SP4 for AS and checked the drivers, reinstalled Excel, even copied the ole db folder from my colleague's computer to my own (by the way, everything works for him, like the others). Maybe someone faced such a problem, tell me what to do?