What to do for Outlook Spam Filter Not Working 2020?To resolve Outlook Spam Filter Not Working 2020, configure the junk mail filter as expected. Adhere to the guidelines to appropriately modify the Outlook spam filter. Navigate to the Settings tab after opening Outlook. Next, select the Mail tab after clicking the option to view all Outlook settings. Select Junk Email from the menu now. Block attachments, images, and links from anyone who isn't on my Safe Senders list should be checked under this area. To save the modifications, click the Save button.