https://www.bleepingcomputer.com/news/technology/malwarebytes-mistakenly-blocks-google-youtube-for-malware/

Malwarebytes has addressed an issue that prevented users from accessing websites and services hosted on the google.com domain, including Google search and Youtube.

According to a large number of reports from people affected by this, their browsers were prevented from accessing Google sites after Malwarebytes flagged and blocked them as malicious.