Why is Windows 10 update wiping out my restore points? On November 21, I created two new restore points (manual). My C: system drive was turned on. My limit was set to 25% and my new 1 terabyte WD hard drive is barely 30% used. This morning, I allowed an update that took a long time to download and install. Afterwards, my Task Manager had new entries, Cortana2. My previous days restore points had been deleted and C: system was turned off in system restore. This is the second time in a month that Windows update has screwed with my settings and system! Why isn't somebody doing something about this?