Can't sign in after downloading new xbox one experience.

guys try hardseting after you got the update it took mine a few power cycles to allow me to sign in after downloading the new experiance

I also need access to the early access forums. I can't update apps or games after downloading the Xbox One New Experience update. I've tried power cycling, deleting/redownloading apps/games. Nothing helps.

For preview related support please go to the Early access forums

forums.xbox.com/.../default.aspx

Same Here. After only a few tries to download the new dashboard, it worked. I now have the new dashboard but I can't sign in to Xbox live.

First, try signing out and then back in on your console. Double tap the Xbox button to open the "Guide" on the left, go up, and then left to your profile picture. Press A, then go down to Sign out. After that, follow the same steps to sign back in.

If that doesn't work, if you have the email address and password for your account, try removing and re-downloading your profile. Go to Settings, Account, Remove accounts and remove yours. Open the guide, go down to Settings, then Restart console. When it
reboots, open the guide, go up, then left to Add & manage and add your account back.

The updated interface is called the "New Xbox One Experience" and it was a massive change from the previous interface. You can find information about it here:
www.xbox.com/.../experience . About halfway down the page there are some controller commands listed that may be useful.