We are creating schedules using an account with a very complex password, and when we create the schedule and try to save it, we get an error saying: "You must enter text with 20 or fewer characters."

This is only happening on IE, but when we use Chrome we do not have any issues using the account password. The problem is that we have admins that use only IE. We are using IE11 at our company. I searched the forums and did not find anything on this.

Thanks,
Adam

Per the definition of Admin Password:

Password
Passwords are case sensitive and can contain numbers and characters up to 20 characters.

I would assume the situation you are addressing is just comparing against the 1st 20 bytes of the password, where a value check on the other is stopping you at 20 bytes.