No one else is seeing Cortana ads.
No one else is seeing Cortana ads.
I had a comparable situation, though this time it was different. I kept receiving emails nonstop about winning $7,000 in prizes for some random contest, which is frustrating. It’s especially irritating when most of the ads are irrelevant to me. Although I haven’t seen any promotions for the Cortana app, maybe it’s just a suggestion from Microsoft that Cortana is a useful tool for various needs.
If you allow the feature, you'll occasionally see ads that highlight unused Windows functions or topics you might find interesting. Navigate to Settings > System > Notifications & Actions, then disable "Get tips, tricks, and suggestions as you use Windows."