After one update I had to go down to the taskbar, click close the program on Sonar but it wouldn't close, the toolbar would start working. I rolled back and it stopped. It wasn't sonar, it was MS. I know it sounds nuts but I found it by accident, my toolbar was greyed out and not working at all, Sonar wouldn't close so I tried to close it that way and it made it start working. W-10 is nice but spooky sometimes.
Good luck. Also try a reboot.
J