Hey, after upgrading to 10.13.2 my Safari, Mail and AppStore stopped working. I can see new Email elements, but not the content (won't load the body). Safari stopps displaying in the half of loading and Appstores keeps the gray background. Seems like everything based on Webkit stopped working... Any hints? --- Post Merged, Dec 6, 2017 --- Final 10.13.2 killed working my Safari, Mail & Appstore (seems to be related to all Apple Webkit Apps). Running PRam/NVRAM Reset (Shutdown, turn on and press immediately ALT + CMD + P + R) fixed it. CSR has been reactivated; make sure to reboot recovery/usb to disable it again.