Hi Susan,
I am John J.D., a fellow Microsoft user like you.
No, there is no built-in way to view all apps in the start menu with one click in Windows 11.
However, you can customize the Start layout to display more pins. Just go to Settings > Personalization > Start and choose "More pins" under Layout.
To access your installed apps quickly, you can pin them to the Start menu.
> Click Windows key to open Start menu.
> Click "All apps" from top right corner.
> Right-click on an installed app and select "Pin to Start" to add it to the Pinned apps section.
As for contacting support, it seems like you encountered an HTTP Error 400 message when trying to reach them. This issue might be related to your browser's cookies or cache.
One alternative way to contact Microsoft support is by using Get Help app.
> Press Windows + S key to open Search.
> Type "Get Help" and click Open.
> Type a keyword and press Enter.
> Then click "Contact Support".
Please let me know if you have any further questions or concerns.
Best regards,
John J.D.