Q. “I recently upgraded to Windows 10 and the sidebar on the right side of the screen gets filled up really fast. How can I take control of what appears there?”
A. That “sidebar” is officially called the Action Center on Windows 10 and, just like the name indicates, it is the main focal point for notifications and other alerts.
It was introduced as part of the initial Windows 10 release. By default, all freshly installed apps, Microsoft Edge, and even some desktop software will push their alerts and other notices to the Action Center. That sounds like a lot.
However, Windows 10 is a very customizable operating system . You have complete control over if these items and how they are presented in the Action Center.
Right now, you must go into these settings to tweak Action Center notices after a new app is installed. The settings for adjusting what apps can push alerts to your Action Center and the types of alerts which can be used are all located in the Windows Settings app under System>Notifications & actions.