Error "The network security key isn't correct" usually occurs when you are trying to connect your computer to a Wi-Fi network ...
Reddit crashed for thousands Friday evening with Downdetector logging spikes around 5:50 PM ET showing "Our CDN was unable to reach our servers" errors blocking logins, posts and loads.
If your hard drive is getting errors, you can scan for bad sectors and try to fix them with the Check Disk Utility.
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