None of these solutions work for me. The registry keys were always created correctly, and I have no special characters in my user id. When I get to: "4. Go to Tools --> Options --> VS Achievements and click the Change User button" The first time this worked, although I was not prompted to log in, just to authorize the extension again. If I click "Sign Out" to try and sign in again, nothing happens and the Authorize screen just gets refreshed. The second time, I tried this and all subsequent times, VS crashes completely, and restarts. On restart I am prompted with the Authorize screen again. No combination, of uninstalling the extension, click authorize/ no way, uninstall/ reinstall etc get the extension working. When I build my solutions the same prompts saying an Achievement(s) have been unlocked, but they don't actually get unlocked.