Handoff stopped working with El Capitan
On my iMac, Handoff worked without problems with Yosemite, but since the arrival of El Capitan, no luck.
Between iPhone (9.1) iPad (9.1) and Watch (2.0.1) no problem. Handoff and instant hotspot work flawlessly.
But on the mac side (now with 10.11.1), no luck.
The System informations show that I am handoff compatible
Handoff is enabled in System preferences
iCloud is enabled on all devices, which are inches apart from one another and all on the same wifi
The fact that handoff/instant hotspot work from iDevice to iDevice tend to hint at a Os X problem, so I did a complete reinstall yesterday after the arrival of 10.11.1, but no luck.
Note that I already did all the usual raindance (Sign out/in of iCloud, bluetooth off/on, wifi Off/on, PRAM)...
Note also that 5 months ago, I swapped the wifi/bluetooth module of my iMac (2011 model) for an apple / broadcom BCM94360CD to have Wifi AC & Bluetooth 4.0 and this worked flawlessly under Yosemite, without any modification to the software needed