Some players may have experienced an “Error #3145” for the RIFT Patcher when patching to Patch 2.7. If you are getting this issue, try the following steps:
- Exit the Patcher.
- Open your Patcher again.
- Click “Switch to Guest” button on the Patcher.
- Update the client normally, and then close the client after it has updated.
- When you re-open the client you should be able to log-in normally and play the game without further issues.
Hope that helps! If that doesn’t work, check the RIFT Support Forums or TRION Support Center and hopefully they have some way of resolving your issues.
RiftGrate 
Doesn’t work for me.
Unfortunately it won’t work for everyone but is usually a quick fix. You can check out the support page linked in the post for other possible fixes or to contact support.
I tried almost everything what i can think about, from cleaning reg entry s, uninstalling game and …. but no success. TRION is a bit lazy about that problem, because it is old error what throws random ppl, last time my RL friend has maybe same problem, cant be sure, but then he copied my game and that fix problem for him to play, that was year before. Now i tried to get back and get some fun, but cant with that error. At last it will be nice that trion put full last version of game to be downloaded by torrent or similar if they dont have programming skills to properly write web-installer.