Anyone owns TAP 11 should follow instructions below. (Tested with SVT112A2WM with Windows 10 x64 bit)
* Download and start the Pairing Tool (https://www.sony.com/electronics/support/downloads/W0011343) (it says 32bit but it worked with my 64bit windows 10) (YOU CAN GOOGLE ep0000605002.EXE FILE IF THE LINK ABOVE DOESN’T WORK)
* Click Pairing (YOU WON’T SEE A "Starting pairing (** seconds left)…….." MESSAGE AS SONY SUGGESTED. DON’T WORY AND CARRY ON AND PLEASE IGNORE ANY DIRECTIONS YOU SEE ON THE PAIRING TOOL MAIN WINDOW)
* Turn OFF the wireless keyboard
* Press CTRL + Esc
* Turn ON the wireless keyboard
The battery light will flash and the Caps Lock light will flash 4 times and the keyboard will pair.
Credit belongs to Clea Jamerson
http://www.designstudioschool.com/sony-svt11215sg-wireless-keyboard-not-working-t272713.html