A user is facing issues while logging in to Salesforce. What should the administrator do?

Answer: See the explanation.

Explanation:
Check if the user is using the correct URL’s for Salesforce. Check if the user is using the correct User Name and
Password for that environment. Check the user’s login history from Setup -> Manage Users -> Login History Check if any login
in hour restrictions or login IP address restrictions exist on the profile to which the user belongs from Setup -> Manage Users -> Profiles -> -> Login Hours and Setup -> Manage Users -> Profiles -> -> Login IP Ranges Check if there is