Multipoint lock handle came off

Thanks for reaching out to us. You have an older style lock that isn't made anymore, but we sell some modern replacements that may work just the same. Before I suggest anything, though, I'll need you to remove the entire lock assembly from the window and show me a photo of the whole thing without obstruction. The handle alone is not something you can replace or repair, so identifying the lock itself is the priority.

Thanks! Your locks appear to match our 38-099 and 38-100. I feel confident that these are the parts you want, but look them over and let me know if you had any questions.

Dimensions for 38-099