Did the upgrade to 10586.3 last night. Everything went smoothly. Took about 2 hours all told. The upgrade deleted Speccy, explaining it is not compatible. I expect Piriform will address that soon. Most troubling is that my NAS device, a 3TB Western Digital with 3 main shares, is no longer visible in Network. I can address the device by its IP address, and for the moment I’ve mapped those shares in This PC by their IP and names (Video (192.168.1.175 (My Book Live Network Storage))).
Browsing Google I see I’m not alone. I’ve tried most of the recommended fixes with no luck. Any ideas would be greatly appreciated.