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Author Topic: Windows 8 incompatibility ?  (Read 1170 times)
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Hi,

When i am connecting my Arduino Uno to my pc with OS Win8 it doesn't pop up that thing that it asks what to do with this device and every time i am trying to upload my sketch it says that Serial Port 'COM1' not found.I tried to install the driver ArduinoUno.inf from Device Manager but it says that isnt digitaly certificated (something like that) and i cant do nothing.Is the problem that Windows 8 isnt compatible for Arduino or do i need something else to do? Every help is very appreciate !! Thanks :] !!

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The Arduino team has created a test version of the signed drivers.
This will be included in the next version of the IDE, but you can download it from here:

http://downloads.arduino.cc/arduino_drivers_win_signed_test1.zip
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Ok Thank you very much when i will get home i will try it and after i will give a response !! Have a nice day smiley-razz
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There's a hoop that needs to be jumped through to install unsigned drivers:
http://windows.microsoft.com/en-US/windows-8/windows-startup-settings-including-safe-mode

It's working like a champ here. Actually, I'd modify those steps slightly:

1.   Swipe in from the right edge of the screen, tap Settings, and then tap Change PC settings. (If you're using a mouse, point to the upper-right corner of the screen, move the mouse pointer down, click Settings, and then click Change PC settings.)

2.   Under PC settings, tap or click General.

3.   Under Advanced startup, tap or click Restart now.

4.   On the Choose an option screen, tap or click Troubleshoot.

4a.   On the Troubleshoot screen, tap or click Advanced options.

5.   On the Advanced options screen, Tap or click Startup Settings.

6.   Tap or click Restart.

7.   On the Startup Settings screen, choose Disable driver signature enforcement.

8.   Sign in to your PC with a user account that has administrator rights.

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There's a hoop that needs to be jumped through to install unsigned drivers:
http://windows.microsoft.com/en-US/windows-8/windows-startup-settings-including-safe-mode

Wouldn't it be better to install the signed drivers than to modify your OS to accept unsigned drivers?
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There's a hoop that needs to be jumped through to install unsigned drivers:
http://windows.microsoft.com/en-US/windows-8/windows-startup-settings-including-safe-mode

Wouldn't it be better to install the signed drivers than to modify your OS to accept unsigned drivers?

Perhaps so. But it's not an OS mod per se, it's a one-time setting that gets reset with the next boot. OTOH the signed drivers are in test status. In this case I wouldn't lose sleep either way though. You pays your money and you takes your chances.
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The signed drivers have been tested and approved for inclusion in the next releases. The only thing that's new is the cat containing the signature. The driver is still the same old non-included usbser.sys so there's not much to test.
I'd say it's safe to use it.
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The signed drivers have been tested and approved for inclusion in the next releases. The only thing that's new is the cat containing the signature. The driver is still the same old non-included usbser.sys so there's not much to test.
I'd say it's safe to use it.

Like I said, I wouldn't lose any sleep over using it.
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