WindowServer prevents from sleep
As it was described in the post in Russian here Предотвращение сна - Apple Community
WindowServer prevents from sleep, what are the next steps to investigate the reason and get rid of it?
MacBook Pro 16″, macOS 14.3
I'm sorry, but the majority of us don't speak Russian here. Care to translate for us the post?
WindowServer itself might prevent sleep if something needs constant action on Energy Saver "put hard drives to sleep" when turned on. Background tasks that do not have a feature to pause when the machine goes to sleep could also cause a problem.
Etrecheck is probably the best way to monitor what background tasks could be delaying your sleep.
Etrecheck - the handy reporting tool for … - Apple Community