Thanks. Was able to unblock file in Security Settings. Everything is good now....Thanks for the reply and yes, I did use the old Sentinal icon for the upgrade. I've since re-installed upgraded Sentinal
I had the same issue, I updated yesterday, and everything worked fine, today I got that error message. Would be nice if Windows Defender told you, it was doing the blocking. I went in and looked at the logging and unblocked it there.
My other PC was updated at the same time and the security settings are the same and it works with no problem (both Win 11).