I have buyed Microsoft Visual Studio Pro w/MSDN - Open License.
I have paper with instructions how to register my license with my
authorization number and license number. On this paper is link to register:
https://msdnopen.one.microsoft.com/public/
but "page not found" appears.
What is correct link to register my license ?

Thanks !
Peter

That domain appears to have been down for some time
(http://www.eggheadcafe.com/forumarchives/msdngeneral/Oct200 5/post24458073.asp)
[note the date]

You might be able to do something with eOpen :
https://eopen.microsoft.com/EN/default.asp
(I have no idea whether eOpen applies to what you have bought)

I suspect your product relates to the Open column here?
http://www.microsoftvolumelicensing.com/userights/ProductPag e.aspx?pid=60

In which case, perhaps (failing all else) try the "Contact Us" at the
bottom of the page...

Marc