Follows are some tips that finally resoved an issue for which I could successfully connect to the MS-SQL server via MySQL Migration Toolkit during the connection test but for which the subsequent reverse engineering phase failed. Initially, the only way I could connect to the MS-SQL server was using 'localhost' [127.0.0.1] as the hostname and port 1434 which was configured by MS-SQL Server during installation as the 'listen' hostname and port. If I set the client computer name and port 1433, the connection test failed.
The resolution is to configure MS-SQL Server to enable the network and client configuration TCP/IP protocols via the 'SQL Server Configuration Manager' with the 'SQL Server 2005 Network Configuration' and 'SQL Native Client Configuration' child objects. The TCP/IP protocol must be enabled for both and each respective property configured (right-click TCP/IP for properties). Note the 'Protocol' and 'IP' tabs and configurations. After enabling the network and client TCP/IP protocols a test connection could be established using the computer name as the hostname and port 1433 *and* the reverse engineering phase successfully completed. I'm not sure if both network and client TCP/IP protocols must be enabled but as configured all worked for me.
SQL Server Configuration Manager configuration settings screen capture image
MS-SQL Server Mixed Mode (Windows Authentication or SQL Server Authentication) must be enabled to allow MySQL Migration Toolkit to establish a connection with a connection string.
SQL Server Management Studio > Object Explorer >
[Server instance] > right-click > properties >
Security > Server Authentication > Windows Authentication or SQL Server Authentication
Microsoft Access: note chapter 13 for the MySQL Migration Toolkit compiled HTML help file.
Preparing a Microsoft Access Database for Migration
1. Tools > Options > View [tab] > Show [section]
Check checkboxes: 'System objects' and 'Hidden objects'
2. Tools > Security > User and Group Permissions
Control-click Select MSysObjects, MSysQueries, and MSysRelationships (highlight all)
or perform individually and sequentially
Check the 'Administer' checkbox to configure each selected item
Click 'Apply' button