[All Hosts] (testing) two fixes for sideloading unified manifest (#5101)

* [All Hosts] (testing) two fixes for sideloading unified manifest

* typo

Author: Rick-Kirkham

docs/testing/sideload-add-in-with-unified-manifest.md

@@ -1,7 +1,7 @@
 ---
 title: Sideload Office Add-ins that use the unified manifest for Microsoft 365
 description: Test your Office Add-in on Windows by sideloading.
-ms.date: 02/26/2025
+ms.date: 03/27/2025
 ms.localizationpriority: medium
 ---
 
@@ -31,11 +31,15 @@ Use the process described in [Sideload with a system prompt, bash shell, or term
 1. Press F5. The project builds and a Node dev-server window opens. This process may take a couple of minutes and then the desktop version of the Office application that you selected opens. You can now work with your add-in. For an Outlook add-in, be sure you're working in the **Inbox** of *your Microsoft 365 account identity*.
 1. To stop debugging and uninstall the add-in, select **Run** | **Stop Debugging** in Visual Studio Code. Closing the server window doesn't reliably stop the server and closing the Office application doesn't reliably cause Office to unacquire the add-in.
 
+   > [!NOTE]
+   > If the preceding step seems to have no effect, uninstall the add-in by opening a **TERMINAL** in Visual Studio Code, and then complete the uninstall step — the *last* step — of the section [Sideload with a system prompt, bash shell, or terminal](#sideload-with-a-system-prompt-bash-shell-or-terminal).
+
 ## Sideload with a system prompt, bash shell, or terminal
 
 1. First, *make sure the Office desktop application that you want to sideload into is closed.*
 1. Open a system prompt, bash shell, or the Visual Studio Code **TERMINAL**, and navigate to the root of the project.
 1. The command to sideload the add-in depends on when the project was created. If the "scripts" section of the project's package.json file has a "start:desktop" script, then run `npm run start:desktop`; otherwise, run `npm run start`. The project builds and a Node dev-server window opens. This process may take a couple of minutes then the Office host application (Excel, Outlook, PowerPoint, or Word) desktop opens.
+1. For an Excel, PowerPoint, or Word add-in, there is an additional step: select the **Add-ins** button on the **Home** ribbon. On the flyout that opens, select the add-in. This completes the installation.
 1. You can now work with your add-in.
 1. When you're done working with your add-in, make sure to run the command `npm run stop`. Closing the server window doesn't reliably stop the server and closing the Office application doesn't reliably cause Office to unacquire the add-in.