I have a small 4 user network - 3 desktops (Windows Home Premium - Not my idea) and 2 laptop (windows 10). One of the desktops is acting as a server (basically sharing out data files). I received a call the other day regarding loss of access to the main shared folder. I assumed it was loss of power, but, there was no entry in the UPS monitoring logs. I booted the cable modem/wireless LAN router to be sure. No success.
I now believe it was due to recent Microsoft updates (I normally shut those off) taking it upon themselves to download, install and
reboot the system. So now 2 of the 4 machines are completely unable to share out anything.
I checked the properties of the Net adapters. I made sure they were connected to the correct network and that data sharing was enabled. I am able to ping with no problem. I disabled my AV/Firewall (Norton Internet Security) and also tried to rejoin the trusted network with their MAC addresses. One PC I attempted to restore prior to the MS updates - failed - unsuccessful. I tried re-naming the PC/work group just to shake the tree. I also created test shared folders with Everyone having full rights - same results. Nothing seems to work.
Error message while attempting to access the share:
'An error occurred while reconnecting P: to \\PC2\Public Microsoft Windows Network the handle is invalid. This connection has not been restored.
I need to restore the ability to share out files and folders.