OK, let's check if connections and queries to the database are even possible.
Please follow the instructions below:
1. Open Command Prompt with elevated privileges.
2. Type the following command there - sqlcmd -S (local)\SQLEXPRESS
3. If connection has been made, you will see "1>" into the console.
4. If the server accepted connection, type the following SQL query:
USE avast_sbc_db
GO
SELECT top(1) Version FROM VpsVersions WHERE Version != '0-0'
GO
5. Paste the output of the query here.
Regards,
Dmitriy