When trying to connect to a remote SQL Server through the Helm Configuration Tool, I click the Test Connection button and get a similar error to this:
Run-time error '-2147217865 (80040e37)': Invalid object name 'sysdatabases'
The Configuration Tool then closes.
Go into the Helm Configuration Tool and go to the System Database tab. Make sure you connect using the SA username and password, since using another username/password won't have the correct permissions needed to access the database remotely.
If you do not know your SQL Server's SA password, refer to SQL documentation on how to set/reset this.