I have a client where the Windows 10 update was installed overnight and it has broken the ability for one of the pc’s to access the other pc for file shares. It is a small network (only 2 pc’s) both running W10 Pro. The main pc can see the shares on the other pc but the one I want to see the main pc shares can only see the main pc in networks but not see any shares.


On the sharing pc, after many attempts in getting it going, I did this and it worked:

  • Control Panel > System and Security > Administrative Tools > Local Security Policy > expand Local Policies > Security options
  • Click on Network security: Lan Manager Authentication level > Then in the field select > Send NTLMv2 responses only > click on Apply, then ok and close all
  • Restart your pc.


Windows 10 version 1709 disables SMB 1.0