Hi @Lucas F.Á
Maybe you're infected, run a full scan with malesbytes
https://www.malwarebytes.com/es/
Standard Disclaimer: This is a non-Microsoft website. The page appears to be providing accurate, safe information. Watch out for ads on the site that may advertise products frequently classified as a PUP (Potentially Unwanted Products). Thoroughly research any product advertised on the site before you decide to download and install it.
Share here the results.
Nb. When do you see this message? Windows startup or then?
Let me know
Elvis