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KB4480970 breaking Local Network access?
I have a Windows 7 laptop that is shared on my local network (Workgroup) that is easily accessed through any computer in the house (most of them being Windows 10 or through Android) through the regular network file sharing and Remote Desktop. For Remote Desktop, I made sure to click the setting: "Allows connections only from computers running Remote Desktop with Network Level Authentication (more secure)".
However, yesterday, upon installing KB4480970, none of the computers can access the Windows 7 computer through the regular network file sharing or Remote Desktop. For Network sharing, the error on Windows 10 computers is "The handle is invalid", and for Remote Desktop, it said "The local security authority cannot be contacted. This might be due to an expired password." with an error code of 0x207 (for Android Remote Desktop). Even when I changed the password, or reinstalled the Ethernet driver, the same errors occurred, but upon uninstalling KB4480970, things went back to normal. Anyone know what this update changes to make it so local network connections to a Windows 7 computer no longer works?