Blog
Engineering Blog
Technical insights on Optimizely CMS, Commerce, and the modern .NET ecosystem.
CMS Administration
Fix Missing Catalogs Tab in Optimizely Commerce
Problem After installing Optimizely Commerce, the Catalogs tab is missing from the CMS Assets Pane, despite: EPiServer.Commerce.UI package being installed User having CommerceAdmins role Commerce ...
Jan 23, 2026
Development
Fixing an AmbiguousMatchException in Optimizely CMS 12
The Problem You start your Optimizely CMS 12 application and get this error: System.Reflection.AmbiguousMatchException: Ambiguous match found for property 'Category' Your application won't start. ...
Jan 20, 2026