Windows 10 collects an “Activity History” of applications you launch on your PC and sends it to Microsoft. Even if you disable or clear this, Microsoft’s Privacy Dashboard still shows an “Activity History” of applications you’ve launched on your PCs.
This problem was recently discussed on Reddit, and it’s pretty easy to confirm. Head to Settings > Privacy > Activity History and disable “Send my activity history to Microsoft.” It was already disabled on our PC, so it made this easy to test.
For bonus points, you can also click the “Clear” button under Clear Activity History. This should, theoretically, clear all that data from Microsoft’s servers. But, apparently, it doesn’t.
Finally, click the “Privacy Dashboard” link on the Activity History settings page.
This takes you to Microsoft’s Privacy Dashboard page in your web browser. Click the “Activity History” link at the top of the page to see the Activity History associated with your Microsoft account.
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Source : Windows 10 Sends Your Activity History to Microsoft, Even if You Tell It Not To
