Fix: The Customization Assembly Could not be Found or Loaded – Office

You may receive an error from Microsoft Office (Excel/Word) because you do not have Visual Basic for Application installed.

The customization assembly could not be found or could not be loaded. You can still edit and save the document. Contact your administrator or the author of this documents for further assistance.

1. In Windows, open Control Panel then Add/Remove Programs.

2. Select Microsoft Office. Choose Add or remove features.

3. Under Office shared features, select Visual Basic for Applications.

4. Re-Launch office and your spreadsheet or document.