"This worked for me and I hope it does for you too.
- In your Programs folder, open the Origin folder and find the Dragon Age Inquisition folder. IMPORTANT: back up your Dragon Age Inquisition folder in case anything goes awry.
- Right-click the folder and choose the Properties tab. Click “Previous versions”.
- You will now see several dated previous versions of the folder. Choose one from BEFORE you installed the patch. Select it and choose “Restore”. This will take quite long - 30+ minutes or even more if your computer is slow. Be patient and wait for the process to be complete.
Now Origin will try to make you update the game again and won’t let you play unless you apply the patch. How to avoid this?
- Open Origin. In the menu, click Origin -> Application settings -> Updates. Make sure all options are unchecked. Restart Origin.
- Now click Origin -> Go offline. Start the game. You will be prompted to sign into your account in a different, non-Origin window. You should now be able to play the game.
What to do in case the last step doesn’t work, or you want to get rid of Origin for good?
There is a small program called Outcome that you can download athttp://outcome.nofate.me . Once you install it, all you have to do is login into your Origin account and it will patch the game so that it doesn’t need Origin anymore. You’re good to go!" - User