The notification or error message is exactly as the following: Our systems have detected unusual traffic from your computer network. Please try your request again later.  Why did this happen? You've searched using different search engines and found some including those from - Google,  https://support.google.com/websearch/answer/86640?hl=en#zippy=%2Ci-shouldnt-be-getting-blocked , - Makeuseof,  https://www.makeuseof.com/google-unusual-traffic-error-fix/ , And some more from other sites with causes almost the same. If you've tried all of those and still unable to reach the resource you need, there are a few things left you can check. That resource is hosted on Google. How each of those different resource there respond, their sensitivity to network activity, however, are not the same. Youtube seemed impervious, most tolerable, though. This kind of error you are getting is happening only to you and probably within your network. It may include your connection through LAN...