I updated FF (default browser) from 72.0.2 (which was working perfectly) to 73.0. At the end of the update process it said (as usual) “Restart Firefox to update”. So I clicked on that”restart” button and the current FF shut down, but there was no restart. After waiting for a few minutes I attempted to start FF manually, only to be greeted by an error box “The application was unable to start correctly (0xc0000005). Click OK to close the application”. Following that, I could start FF manually and it looked OK, but was not working correctly. In particular, links from within emails would not open. Clicking on a link in an email would start FF (if not already running) or would open a new tab (if already running), but in both cases the URL field would just say “Search or enter address” and nothing more would happen.
I understand that the error code means some kind of access violation? Is there somewhere I could get more information, such as a log file? Is there something I could do, to stop it from happening again? I ran sfc/scannow, but it found nothing.
So I have reverted back to72.0.2 (restored from backup). and once again it is now working correctly, including links in emails. In all the years I have been updating FF from one version to the next, this has never happened before.
Windows 10 Pro 64 bit 20H2