I am also having the same issue. Did you guys find any solution? Please share.

Thanks for the replies.

I was able to do the AD authentication and add AD domain accounts to SQL logins. But I am not able to change the SQL server service...

Guys, please share your thoughts. Really appreciate.

I even tried adding connection timeout to 120 sec in the connection manager. The jobs fails within 60 seconds. So it's not a query timeout issue. 
Retain Same connection wont...

No, the sql server was not restarted during the error. It occurs at random times. 
No, there aren't any other errors. But these 3 errors come every time.