Dont install Windows 10 if you use Vivado.

[hamster]

Tried this last night. Vivado can no longer find an implementation license. 

Now rolling back to 8.1..

EDIT by JColvin: Note that this thread was created back in August of 2015; newer versions of Vivado (2016.1 onward at the time of writing) officially support Windows 10

[NAEastland]

Thanks for the info hamster! Hopefully either someone finds a work around or Xilinx can begin supporting the OS soon.

-Nate

[hamster]

It might just be that the upgrade expired the license. When I rolled back to windows 8.1 I had to get a new license file....

[hamster]

More on this, Today I installed the Windows 10 update, tried to re-license Vivado and it still didn't work.

My advice? Just don't go there (and uninstall window update KB3035583 to stop the "Upgrade Now to Windows 10" popup)