Hi
Welcome to the Microsoft community.
From your description, you could close the browser extension, or close and uninstall your anti-virus software. Check if it is valid.
In addition, if you use chrome. We suggest you consult the support of chrome for more information.
Disclaimer: This is a non-Microsoft website. The page appears to be providing accurate and safe information. Watch out for ads on the site that may advertise products frequently classified as PUP (Potentially Unwanted Products). Thoroughly research any product advertised on the site before you decide to download and install it.
Keep us posted if you encounter any challenges along the process.
Best regards
Derrick Qian | Microsoft Community Support Specialist
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