Windows 10 cannot connect to windows 7 computers

windows-7 windows-10 smb netbios

6,257

Solution 1

Thanks to user gravity comment, i used Wireshark. In Wireshark there was "SMB2 Negotiate protocol", then "SMB2 Session setup", there Windows 10 was stopping connection after server offered him to connect using Guest access.

So i found this Microsoft article https://support.microsoft.com/en-us/help/4046019

Turning "Enable insecure guest logons" in group policy resolved this issue.

Solution 2

I just found this solution and want to get it out there.

Update KB4480970 deactivates the Network Controller on Windows 7 and Server 2008 systems such that shares at a server are no longer accessible.

So uninstall Microsoft Update KB4480970 with this command:

wusa.exe /uninstall /KB:4480970

6,257

Andrei

Updated on September 18, 2022

Comments

Andrei over 1 year
Newly installed (by full reset) Windows 10 Pro computer cannot connect to Windows 7 computers and Debian SMB servers on the network.

It can see all computers and servers on the network (all computers have same workgroup name), but can connect only to others Windows 10 computers.

I enabled "SMB 1.0/CIFS Client" in Windows features. "Enable NetBIOS over TCP/IP" is checked.

If i do from cmd:
```
nbtstat -a myservername
```
it works and shows server information
```
Ethernet:
Node IpAddress: [192.168.0.32] Scope Id: []

       NetBIOS Remote Machine Name Table

   Name               Type         Status
---------------------------------------------
MYSERVERNAME   <00>  UNIQUE      Registered
MYSERVERNAME   <03>  UNIQUE      Registered
MYSERVERNAME   <20>  UNIQUE      Registered
☺☻__MSBROWSE__☻<01>  GROUP       Registered
MYDOMAIN       <00>  GROUP       Registered
MYDOMAIN       <1D>  UNIQUE      Registered
MYDOMAIN       <1E>  GROUP       Registered

MAC Address = 00-00-00-00-00-00
```
but
```
net view \\myservername
```
gives error "System error 53 has occurred. The network path was not found."
- Akina over 5 years
  
  Are user accounts and their passwords sync?
- user1686 over 5 years
  
  Can you use Wireshark to capture the failed connection attempts?
An-Tax over 5 years

Keeping it simple, just the IP address. If we can't connect to that then not a netBIOS issue.
Andrei over 5 years

With IP is exactly the same - nbtstat works and net view - not.
Andrei over 5 years

Turning "Enable file sharing for devices that use 40- or 56-bit encrypting" did not resolved given issue.