The most serious charges against the violinist Stefan Arzberger, who had been accused of trying to strangle a fellow guest in a Midtown hotel, were dismissed Wednesday in New York State Supreme Court in Manhattan.

Mr. Arzberger, who had faced a charge of attempted murder, instead pleaded guilty to a less serious charge of reckless assault in the third degree, and was given an unconditional discharge. He faces no jail time or fine.

The decision leaves Mr. Arzberger, a violinist for the Leipzig String Quartet whose passport was confiscated, free to return home to Germany after a 15-month ordeal.

Mr. Arzberger, 43, had been accused of barging naked into the room of a 64-year-old woman at the Hudson Hotel, where he was staying while on tour in March 2015, and trying to strangle her.