I was receiving errors 8312 and 8103 when trying to download a new patch. Also, my IR's were not showing up when I clicked the "impulse" list. When attempting a backup, I received error 8212. My OS is Windows 10, and I was on edit version 2.60. I updated to 2.71 and the problem was still there. What solved it for me was downloading and installing edit version 2.71 AGAIN. Once I did, everything worked!