Unable to connect to a previously functional connection

If a user is unable to connect to a previously functional connection, then something has to have happened on the server or network side to make this so. Either a) the server name and\or IP address has changed, b) the database has become corrupted or is no longer present, c) the user name and\or password has changed, d) the SQL Server service needs to be restarted, or e) the user’s network is having connectivity issues. If “a” or “c” are true, then this can be remedied by editing the existing connection with the new information. An administrator will not be required to make this change. If “b” is true, then an administrator will be needed to rebuild or restore the database. If “d” is true, then an administrator will be required to stop and restart the service on the server. If “e” is true then an administrator will be needed to repair the connectivity issue at either the site or the server. Once this is completed the user should be able to resume connection to the database without issue.