Arduino Uno on Windows 8 without disabling driver signing

I tried to install my Arduino Uno under Windows 8 today. The included drivers do not work because they are not signed. One way people get them to work is to temporarily disable the check on driver signing as seen here. I was able to do it without rebooting or using unsigned drivers. Here is how:

1. First plug in your Uno and let the driver installation fail.
2. Open the device manager, click start and then type device manager.
3. Right click on the yellow Arduino Uno and choose update driver software.
4. Click “Browse my computer for driver software”
5. Then click “Let me pick from a list of device drivers on my computer”
6. Click modem and then next.
7. In the list, under manufactuer, choose Compaq. Then for model choose “Ricochet Wireless USB Modem”
8. When Windows complains, it is OK, choose to continue and the close the installer after it completes.
9. Now under modems, you will see “Ricochet Wireless USB Modem”, right click on it and choose properties.
10. Under modem, set the maximum speed to 9600.
11. On the advanced tab, click “Advanced Port Settings”
12. Uncheck use FIFO buffers

Note the COM Port Number, you will need this in the Arduino IDE
Click OK, and click OK.
Done

from:  http://dawdevel.blogspot.nl/2012/12/arduino-uno-on-windows-8-without.html