Firefighters received a call at 10:46 a.m. about a window about to fall from the 17th floor of an office building at 275 Battery St.
Crews responded to the scene and authorities shut down the sidewalk and street below the window.
The cracked glass was removed and plywood was put up to secure the window, fire spokeswoman Mindy Talmadge said.
The street beneath the building reopened around 3 p.m., she said.
