I haven't seen this error message before. I'm using Firefox 43.0.4, which was closed when I restarted, as were all programs.
I have an HP Pavilion 500-320 desktop. Two days ago, I updated all drivers manually in the Device Manager, because my HP Assistant didn't do it automatically and apparently the Windows update didn't either. I checked and found that the Windows update had reset itself from auto, and I changed it back and checked for updates, so I am current. Afterwards, the HP Assistant performed a successful update and is working again. I had an unsuccessful automatic Java update, so I went to the Oracle site and found that I had two updates that were outdated and Oracle removed them. I then downloaded the Java update and it installed successfully.
Before restarting Windows 10 today, I closed all programs and then selected and clicked restart. That's when I saw, for the first time, the error message "the exception breakpoint has been reached." There were numbers following, but I didn't catch them in time, as the computer restarted quickly with no problems.
In researching this issue, I saw that someone suggested that browser addons could be at fault. The addons I have are Pinterest button, uBlock Origin and LastPass.
Is this something I should be concerned about? What action(s) should I take?
Thanks for your assistance!
Marian