Hi, I've never seen this one before. It started when I was using MPC-HC or file explorer and I would be unable to open an additional instance after an arbitrary number of 2 to 4 instances. Now I have 2 MPC-HC and one file explorer window and to open Chrome and post this I had to close the file explorer Window. I was sure sfc /scannow would have to find something but it didn't. Any ideas?