RE: Unattended install fails silently, inconsistently

I can't install it using the GUI tools either.

Any ideas what the root cause could be?

5. Using the UI over RDP

I double click to run the installer.

I accept all the default settings and supply the correct password for the account that SQL Server runs as.

When I click Next at 'Select SQL Server authenticaion mode', I see an error message.

Quote:

Failed to verify that the account (DEV\sqlservice) is a member of the SQL Server sysadmin fixed server role for the selected instance. SQL error: Login failed for user 'DEV\sqlservice'. This installation may not be able to install the SQL Backup extended stored procedures. User another login.

The SQL Server error log shows no failed login attempts.

6. Using SQL Backup UI on my workstation

I run SQL Backup on my workstatation.

I open the "Add SQL Server" dialog, supply the server name and the correct password for the SQL Server service account, and accept the defaults.

I click finish, SQL Compare validates the options, then the installation starts.

It fails at the first step "Copying and running SQBServerSetup".

Code:

REMOTESERVER: Server Component Installation - Failed ====================================================== Copying and running SQBServerSetup - Failed ------------------------------------------- Error running installer: exit code 6200 The SQL Backup Agent service failed to connect to the SQL Server instance using the SQL login provided.

Exit code 6200 means "SQL authenticated user name or password is invalid."

Again, the SQL Server error log shows no failed login attempts.