The creation and customization of database applications using Microsoft Access
What is most likely happening is that the database is opening as untrusted on the new laptop. In Access, when a database is untrusted, it opens in Disabled mode, which turns off executable content. That includes:
- VBA code and references
- unsafe macro actions
- SQL Pass Through Queries
- ActiveX controls
If VBA and pass-through queries are disabled, forms that depend on them may not work correctly, and modules cannot be used as expected.
To use the database on the new laptop:
- Open Access.
- Go to File > Options.
- Select Trust Center.
- Under Microsoft Office Access Trust Center, select Trust Center Settings.
- Select Trusted Locations.
- Either note an existing trusted folder path or click Add new location to create one.
- Move or copy the Access database file into that trusted location.
- Open the database again from that trusted location.
If the database is intended for multiple machines, a better deployment approach is to keep it as a split design:
- SQL Server as the back-end for data
- an Access front-end containing forms, reports, queries, macros, VBA modules, and linked tables
For deployment to another laptop, also verify:
- the new laptop has the correct version of Access
- the 32-bit or 64-bit version matches what the application requires, because incorrect bitness can affect Windows API calls, DLL references, and ActiveX controls
- if the front-end uses an ODBC DSN file, that DSN must also be installed on the new laptop; otherwise a DSN-less connection can avoid that requirement
If the file being used is an .accde, its VBA code cannot be viewed or modified by design. To change forms, reports, or modules, the original .accdb must be edited and then saved again as .accde.