Dan: C When you say “silent block”, do you mean it was not even in the DeveloperLog.log? If an item is not in the DeveloperLog.log, then VS did not see or block it.
Nothing in logs, no desktop alert, no command line. Brave Nightly alerted unable to reach web for update (I have no added firewall rules or FW app). BN & WD updated only after uninstalling VS. Reinstalled, re-set whitelist and all OK now.
