Can't access Windows shares after Windows 10 build 1803 update

Solution 1:

After quite a lot of wasted hours I found... maybe a solution, maybe more of a workaround, elseweb: turning off and on the association of File & Print Sharing with the network adapter on the target computer (the one whose share you're trying to connect to) appears to fix it. So far the fix has stuck for me, but others have reported it only lasting until the next reboot, or possibly (if on wifi) the next network change.

Cycling this can be put in a Powershell script:

Disable-NetAdapterBinding -name "adaptername" -ComponentID ms_server
Enable-NetAdapterBinding -name "adaptername" -ComponentID ms_server

Needs to be run as Administrator.