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Error Code 800703ED upgrading to Windows 10 Technical Preview

SkiFire13 asked on

Hi, I'm traing to upgrade Windows 7 Ultimate to Windows 10.

I'm italian, so I used this guide, but, when I tried to upgrade by Windows Update it doesn't work. It try to upgrade, say it's doing the upgrade and after it say that there is an error (Code 800703ED) and it cannot upgrade.

Edit: ah, I have a SSD, I saw that maybe a problem about storage....

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Vinodh.V replied on


Thank you for the reply.

This problem might be caused due to various reasons:

  • Application conflict.
  •  Driver conflict. 

 We suggest you to do a custom install of Windows of Windows 10 on the PC.

Download Windows 10 Technical Preview ISO from the below link and reinstall the PC with Windows 10 Technical Preview:

Hope this information helps, for further assistance please reply. 

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lnappa replied on

Thank you for pointing this out, I marked my my system partition active in the Storage section of Computer Management and the upgrade now continues. I had obvously forgotten to activate the partion in an SSD upgrade of the computer.
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