Microsoft Bot (webchat channel): 500 Internal Server error: failed to send message

Question

We have embedded a Bot on a web page through the web chat channel, if the Bot is idle for 10 minutes or so and then a question is asked, the Bot does not re

Answer 1

Are you running the bot in Azure? If so, make sure you have "AlwaysOn" enabled; otherwise the web app will be unloaded if it's idle for a period of time. Check this for a similar problem.

Always On. By default, web apps are unloaded if they are idle for some period of time. This lets the system conserve resources. In Basic or Standard mode, you can enable Always On to keep the app loaded all the time. If your app runs continuous web jobs, you should enable Always On, or the web jobs may not run reliably.

You can read more about the web sites configuration here.