The Microsoft Junk Email Reporting Add-in is a free extension for classic Outlook desktop clients. It allows users to report unsolicited "junk" emails directly to Microsoft.
I can provide the direct link or specific installation steps for your exact situation.
Open the app and look for the new "Report Junk" button in your ribbon. How to Use the Add-in Effectively
Ensure you select the version (x86 or x64) that matches your installed version of Outlook, not necessarily your Windows version. System Requirements and Compatibility
Go to File > Options > Add-ins . Look at the "Disabled Items" list at the bottom.
Finding the official download is the first step toward a cleaner inbox. Because Microsoft frequently updates their documentation, it is important to source the installer from official channels. Visit the Microsoft Download Center.