AFT8 Login troubleshooting error with login web browser message ATS Tom April 13, 2026 08:17 Updated Sorry, we are having trouble signing you in. To Resolve: Close the browser tab/window. Click Sign In again. Related articles Login to AFT Desktop and sync licenses to AFT8, updated files and settings How to trade futures using fully automated modes in NinjaTrader with AFT8. AFT8 video guides troubleshooting changing from sim account to prop evaluation, prop live trading or live account trading NinjaTrader 8 keeps trying to connect sim after installing AFT NT8 Boot Strapper