Whenever I open a private browsing window and search on Google, I get a message saying, "Our systems have detected unusual traffic from your computer network." I've already restarted my Wi‑Fi, but the problem continues. Is this caused by incognito mode, my internet provider, or something else?
4 Answers
Your internet provider may be using CGNAT, which puts many customers behind the same public IP address. Google sees a lot of traffic coming from that shared address, and private browsing also removes some of the browser history and identifiers it normally uses to recognize you. That combination can trigger CAPTCHA checks. Restarting your router usually won't help if the public IP stays the same.
A dedicated IP doesn't guarantee that this won't happen. The CAPTCHA can also depend on the browser fingerprint, cookies, extensions, or the particular private-mode implementation. Since a clean Firefox installation worked for someone else, testing another browser with extensions disabled may help identify whether the current browser setup is contributing.
Private browsing tends to trigger these checks more often because Google has less information about the browser session. If you need a quick workaround, try a normal browser window, or use another search engine. A fresh browser profile can sometimes behave differently too, but there isn't always a permanent fix on your end.
Check whether you're connected through a VPN, proxy, or privacy-focused network service. Those can share an IP address with many other users and make the traffic look suspicious. If you aren't using anything like that, the issue may simply be the reputation of your provider's IP range. Some people avoid the repeated challenges by switching search engines.

I use private browsing for a specific reason, so switching to a normal window isn't really a solution. I'll probably try a different browser or search engine instead.