Conditional acceptance I just got a conditional admission from a highly prestigious master's programme in Europe but I have a question. What happens if I got conditionally accepted but I can't provide my diploma at a given time written in the letter? (because my graduation will be after the deadline). I already contacted with the university but it would be nice if you could share your experiences if you had something similar.

Thank you.
Every such case is individual and depends on the rules set in place. Contact both universities, actually. Perhaps your current institution can assure the new one that the diploma is certain to be issued by some date. Perhaps the new institution will accept that. But it is up to them. 

I doubt that they will be especially finicky about the rules, but no one can say but them. Keep all of your other options open until things are finalized. 

Even a letter from a professor might assure them that all is well.