Q: airdrop wont work on my mac in my home network

hi!

i have macbook pro retina(mid 14) , el capitan,

and iphone se, updated to the last version.

no matter what i will do, and i did everything- air drop wont work in my macbook- it will work on my ipad, iphone and everything- but on my macbook, it wont work.

and it gets stranger-

on other networks(for example, my work network)- it will work without any problem on my mac.

so what is the problem?

its not the router, cause at my iphone and ipad its working good,

its not on my mac because its working good at other networks....

i tried every **** solution on the web,

can any body help me solve the puzzle?

dan