Software developer Photon recently posted about a curious bug that they found in macOS involving TCP networking, which is widely used by computers for internet connectivity. Apparently, if a Mac that’s online is left on for exactly 49 days, 17 hours, 2 minutes, and 47 seconds, the Internet connection stops working.

The issue does have a fix: restart the Mac. This resets the connections and gets them working again. However, the countdown also restarts, so if the Mac is left on for another 49 days, 17 hours, 2 min