Web Files Missing Notes Tab and Unable to Attach Custom .JS

Applies to Product - Power Pages

What’s happening?
Customers are unable to attach a custom .JS file to a web file in Power Pages due to the missing Notes tab.

Reason:
A system setting in the environment was blocking the attachment of JS file types.

Resolution:

1. Sign in to the Power Platform admin center.
2. Select the appropriate environment.
3. Navigate to Settings > Product > Privacy + Security.
4. Locate and remove the restriction on JS file types.