Barcode ActiveX Error: “Unable to load DLL file”

The “Unable to load DLL file” error typically occurs on Windows systems where security settings restrict folder access.

Solution

1. Navigate to the folder containing your TALBarCd.OCX installation
2. Select all DLL files in that folder (do not select the .OCX file)
3. Copy these DLL files to either C:\Windows or C:\Windows\System32. Leave the TALBarCd.OCX file in its original installation location

This approach ensures the ActiveX component can locate its dependencies regardless of security restrictions, since the OCX file must remain in its original registered location while only the supporting DLL files need to be moved.

How this happens

During installation, the TAL Barcode ActiveX component places the TALBarCd.OCX file and several supporting DLL files in the same folder, then registers the OCX file in the Windows registry. The DLL files don’t require registration.

When your application loads TALBarCd.OCX, the component searches for its supporting DLL files in this sequence: first in the same folder as the OCX file, then in C:\Windows, and finally in C:\Windows\System32. The “Unable to load DLL file” message appears when folder access restrictions prevent the ActiveX control from finding these essential files in any of these locations.