diff --git a/types/office-runtime/index.d.ts b/types/office-runtime/index.d.ts
index ccfa3e390d..4c51abc30d 100644
--- a/types/office-runtime/index.d.ts
+++ b/types/office-runtime/index.d.ts
@@ -18,97 +18,6 @@ Copyright (c) Microsoft Corporation
  * Office runtime namespace.
  */
 declare namespace OfficeRuntime {
-    /**
-     * Encapsulates methods that interact with the Office UI.
-     * @beta
-     */
-    interface UI {
-        /**
-         * Get the ribbon of the Office application.
-         */
-        getRibbon(): Promise<Ribbon>;
-    }
-    /**
-     * Encapsulates the management of the Office ribbon state.
-     * @beta
-     */
-    interface Ribbon {
-        /**
-         * Stages the updates to be made to the ribbon.
-         * Note that this API only requests an update. The actual UI update to the ribbon is controlled by the
-         * Office application and hence the exact timing of the ribbon update (or refresh) cannot be determined
-         * by the completion of this API.
-         * @param input Represents the updates to be made to the ribbon. Note that the only changes made to the ribbon
-         * are those specified in the input parameter. In all other respects, the ribbon is not changed.
-         */
-        requestUpdate(input: RibbonUpdaterData): Promise<void>;
-    }
-    /**
-     * Represents the parts of the ribbon that the call to `requestUpdate` will change.
-     * @beta
-     */
-    interface RibbonUpdaterData {
-        /**
-         * Array of the tabs whose state is set with a call to `requestUpdate`.
-         */
-        tabs?: Tab [];
-    }
-    /**
-     * Represents an individual tab and the state it should have.
-     * @beta
-     */
-    interface Tab {
-        /**
-         * Identifier of the tab as specified in the manifest.
-         */
-        id: string;
-        /**
-         * Represents an array of controls in the tab whose state is set with the call to `requestUpdate`.
-         */
-        controls?: Control[];
-    }
-    /**
-     * Represent an individual control or command whose state is set with the call to `requestUpdate`.
-     * @beta
-     */
-    interface Control {
-        /**
-         * Identifier of the control as specified in the manifest.
-         */
-        id: string;
-        /**
-         * Indicates whether the control should be enabled (default) or disabled.
-         */
-        enabled?: boolean;
-    }
-    /**
-     * Represent an individual gallery control.
-     * @beta
-     */
-    interface Gallery extends Control {
-        /**
-         * Used to refresh a gallery control including optional data to be passed to the gallery control at the time of refresh action.
-         */
-        refreshData?: {};
-    }
-    /**
-     * Represents an individual menu item whose state is set with the call to `requestUpdate`.
-     * @beta
-     */
-    interface MenuControl {
-        /**
-         * Identifier of the menu item as specified in the manifest.
-         */
-        id?: string;
-        /**
-         * The position of the item in the menu.
-         */
-        position?: number;
-        /**
-         * Indicates whether the menu item should be enabled (default) or disabled.
-         */
-        enabled?: boolean;
-    }
   /**
    * Method that enables a pop up web dialog box.
    *