Can a wireless bridge work through a window or in a metal building?

One owner's link was completely dead at 120 ft, and the cause was shooting through windows. Coated glass that looks transparent to you is opaque to a 60 GHz signal. Even at short distances an indoor mount behind glass is not a fallback.

Metal outbuildings add a second problem: steel siding and roofing block the signal on the barn side as well. The standard fix in owner threads is to mount the radio outdoors on the building or a mast and run a single outdoor-rated Ethernet cable inside to carry both power and data.

Mounting outside brings its own work. Use a proper mount that holds up in wind, shielded outdoor cable and surge protection at both ends. Those are covered in the brief's checklist of what breaks these links.