Adding a section on VSCode Insiders (#23979)

Co-authored-by: Sarah Edwards <skedwards88@github.com>

Author: asciimike

content/codespaces/troubleshooting/troubleshooting-codespaces-clients.md

@@ -19,6 +19,18 @@ When you open a codespace in your browser using {% data variables.product.prodna
 
 You can check for known issues and log new issues with the {% data variables.product.prodname_vscode %} experience in the [`microsoft/vscode`](https://github.com/microsoft/vscode/issues?q=is%3Aissue+is%3Aopen+codespaces) repository.
 
+### {% data variables.product.prodname_vscode %} Insiders
+
+{% data variables.product.prodname_vscode %} Insiders is the most frequent release of {% data variables.product.prodname_vscode %}. It has all the latest features and bug fixes, but may also occasionally contain new issues that result in a broken build.
+
+If you are using an Insiders build and notice broken behavior, we recommend switching to {% data variables.product.prodname_vscode %} Stable and trying again.
+
+On the desktop version of {% data variables.product.prodname_vscode %}, you can switch to Stable by closing the {% data variables.product.prodname_vscode %} Insiders application, opening the {% data variables.product.prodname_vscode %} Stable application, and re-opening your codespace.
+
+On the web version of {% data variables.product.prodname_vscode %}, you can click {% octicon "gear" aria-label="The manage icon" %} in the bottom left of the editor and select **Switch to Stable Version...**. If the web version doesn't load or the {% octicon "gear" aria-label="The manage icon" %} icon isn't available, you can force switching to {% data variables.product.prodname_vscode %} Stable by appending `?vscodeChannel=stable` to your codespace URL and loading the codespace at that URL.
+
+If the problem isn't fixed in {% data variables.product.prodname_vscode %} Stable, please follow the above troubleshooting instructions.
+
 ## Browser troubleshooting
 
 If you encounter issues using codespaces in a browser that is not Chromium-based, try switching to a Chromium-based browser, or check for known issues with your browser in the `microsoft/vscode` repository by searching for issues labeled with the name of your browser, such as [`firefox`](https://github.com/microsoft/vscode/issues?q=is%3Aissue+is%3Aopen+label%3Afirefox) or [`safari`](https://github.com/Microsoft/vscode/issues?q=is%3Aopen+is%3Aissue+label%3Asafari).