Why can I only access the 5 computers on my network by forcing SMB v1.0 active

Question

I was asked to post here since my problem was too technical for the normal community. I have several computers networked together. Since a recent Windows update I can no longer access any file shares on any of those computers unless I manually force SMB v1.0. All I get is "you cannot access that folder. Contact your administrator" Firewall is off on all computers and there are no other programs blocking. Also all services needed are running.

Ideas?

Answer 1

Hello,

It seems like the recent Windows update has disabled SMBv1.0 on your networked computers, which is causing the file sharing issue. Microsoft has deprecated SMBv1.0 due to significant security vulnerabilities and strongly encourages not to use it.

To resolve this issue, you can try enabling SMB v2 or v3 on your computers.

To do this, you can try entering the following commands:

Get-SmbServerConfiguration | Select EnableSMB2Protocol

Set-SmbServerConfiguration -EnableSMB2Protocol $true

REF: https://learn.microsoft.com/en-us/windows-server/storage/file-server/troubleshoot/detect-enable-and-disable-smbv1-v2-v3?tabs=server

After enabling SMB v2 or v3, try accessing the file shares again and see if the issue is resolved. If you continue to experience issues, please let me know and we can explore other troubleshooting steps.

Best Regards,

Hania Lian

============================================

If the Answer is helpful, please click "Accept Answer" and upvote it.

Answer 2

I'm not running an actual Windows server machine. I just want to be able to access my files on a local LAN vial the network. Those commands I believe are designed for Windows Server which will not work for me. The Get-SmbServerConfiguration | Select EnableSMBxProtocol returns an error saying invalid command. I can ping each machine just fine. I can use Synergy (which allows me to use my mouse and keyboard between multiple machines) just fine so they are communicating just fine. I just can not access any files/drives without manually activating SMB v1.0