Installing the LightBox Excel Add-in

The LightBox Excel Add-in is available in the Microsoft Excel Add-ins manager. Follow the instructions below to download and install it.

Learn more about the LightBox Live add-in for Excel

Installation as a single user (not organization/admin managed)

1. Open Excel

2. Desktop : Click on the Insert ribbon > Get Add-ins (or My Add-ins). Web: Click on the Home ribbon > Get Add-ins (or My Add-ins).

3. Click My Add-ins.

The Office Add-ins modal will open.

1. Click Store.

2. Search for the LightBox add-in.

3. Click the green Add button at the bottom of the modal.

The modal will close, and the LightBox add-in will appear in the ribbon.

Installation via a Microsoft 365 Admin (Organization-managed)

1. Go to the Microsoft 365 Admin Center: https://admin.microsoft.com

2. Navigate to:

   • Settings > Integrated apps > Add-ins tab.

   • Or use the shortcut: Settings > Add-ins and apps > Deploy Add-in.

3. Click Deploy Add-in.

4. Choose "Choose from the Store", search for the LightBox Excel add-in, and select it.

5. Follow the wizard:

   • Accept permissions.

   • Choose who gets the add-in:

     • Everyone

     • Specific groups

     • Specific users

6. Finish deployment.

📌 The add-in will automatically appear in the users' Excel ribbon, usually after a short delay or next restart.

Whitelist information

The LightBox Live add-in for Excel uses the Microsoft Office Web Add-in runtime and requires outbound HTTPS (port 443) access to our add-in hosting domain and API endpoints. If these are blocked or SSL-inspected in a way that breaks Office.js, Excel custom functions will return #NAME? because they fail to register.

Please whitelist:

• https://excel.lightbox.live/ (Application)

• https://api.lightboxre.com (APIs)

• https://login.lightboxre.com/ (Authentication)

• https://us.i.posthog.com/ (Metrics)

• *.office.com

Also confirm Office Web Add-ins are not disabled via Group Policy.