You can see the detailed instructions here
http://windows.microsoft.com/en-us/windows-8/update-from-windows-8-tutorial
from Microsoft itself.
I faced issue in upgrading to Windows 8.1, it just didn't show up in the Windows Store (Update Tiles)
Microsoft has a suggested solution at their website here
http://windows.microsoft.com/en-us/windows-8/why-can-t-find-update-store
This worked for me through with a one more step.
Ofcourse you would need to update your PC or Laptop first with the available Windows Updates.
Then the upgrade option to Windows 8.1 should show up in Windows Store. When you click to install it, it might give an error again as it gave me. What worked for me was to disable the McAfee firewall, and then it worked flawless.
http://windows.microsoft.com/en-us/windows-8/update-from-windows-8-tutorial
from Microsoft itself.
I faced issue in upgrading to Windows 8.1, it just didn't show up in the Windows Store (Update Tiles)
Microsoft has a suggested solution at their website here
http://windows.microsoft.com/en-us/windows-8/why-can-t-find-update-store
This worked for me through with a one more step.
Ofcourse you would need to update your PC or Laptop first with the available Windows Updates.
Then the upgrade option to Windows 8.1 should show up in Windows Store. When you click to install it, it might give an error again as it gave me. What worked for me was to disable the McAfee firewall, and then it worked flawless.
