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How to Share VBA Code Across Multiple Microsoft Access Databases
Question details
The user needs to reuse and share VBA code across a multi-file Microsoft Access application without duplicating the code in every database.
- Product
- Microsoft Access
- Device & OS
- not provided
- Scenario
- Managing a multi-file Access application where forms, reports, and queries require access to a centralized, reusable VBA library.
- Observed behavior
- VBA modules cannot be linked similarly to standard external data tables, requiring a specific deployment method as an Access library or add-in.
Ensure that your shared Access databases and VBA libraries are stored in a reliable local network location rather than a cloud-syncing folder like OneDrive, which can cause file locking or corruption.
Reference an External Shared VBA Library
Centralize your shared VBA code in a standalone Access database file and reference it within your front-end applications.
To properly share VBA code, it is best practice to use a three-tier Access design. This involves storing tables in a network back-end ACCDB, keeping forms and queries in front-end databases, and deploying shared VBA as a referenced library.
Save your shared VBA modules into a new, separate Access database file (ACCDB, ACCDE, or ACCDA).
Open the front-end Access database where you want to utilize the shared VBA code.
Press ALT + F11 on your keyboard to open the Visual Basic Editor (VBE).
In the top menu bar of the VBE, click on 'Tools' and then select 'References'.
Click the 'Browse' button, change the file type filter to Microsoft Access Databases, locate your shared library file on the network, and click 'Open' to establish the link. Ensure the checkbox next to your new reference is ticked, then click 'OK'.
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Frequently Asked Questions
Can I link VBA code exactly like an external Access table?
No, VBA modules cannot be linked via the External Data tab like standard tables. You must store the shared code in a separate database file and reference it via Tools > References in the Visual Basic Editor.
Should I store my shared Access VBA library on OneDrive?
It is highly recommended to store shared Access databases and VBA libraries on a standard local network drive. Cloud syncing services like OneDrive or SharePoint sync folders can cause file locking and database corruption when actively used.
What is the difference between ACCDB, ACCDE, and ACCDA for VBA sharing?
ACCDB is the standard editable database format. ACCDE is a compiled version that locks the VBA code from being viewed or edited by end-users, protecting your source code. ACCDA is a format specifically designed and packaged for deploying Access Add-ins.
