I don’t like making new threads on existing issues, but I have now had this issue on 3 different sites across the country this morning. I am not sure if Windows did some 10 updates last night but I have sites not updating tags in PAC display. The only time the tags update and values change on the screen is if I take another window in display and drag it across the other window. I have done all the exception tricks and settings.
Not sure where to go next… I am pointing a finger at windows as this has now happened overnight?