System Preferences not Responding, all Printers Disappeared


i upgraded high sierra few days ago. running 2017 imac (18,3).

today have had trouble preview stalling every time use it. printers disappeared cannot print. when go system preferences/printers & scanners, nothing happens when click on "+" sign.

have restarted several times.

in activity monitor cpu pressure running under 15%, system between 5% , 10% -- memory using less 5gb of 16gb.

ideas?
--- post merged, jan 3, 2018 ---
activity monitor showed system preferences not responding brief time, no longer in red now. shows 23 recent hangs.
 



Forums Macs macOS macOS High Sierra (10.13)


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