[Samba] Windows 10 cannot connect without SMB1

Rowland penny rpenny at samba.org
Mon Mar 1 16:06:07 UTC 2021 

On 01/03/2021 15:57, K. R. Foley wrote:
>
> On 3/1/21 9:40 AM, Rowland penny via samba wrote:
>> On 01/03/2021 15:35, K. R. Foley wrote:
>>>
>>> On 3/1/21 9:19 AM, Rowland penny via samba wrote:
>>>> On 01/03/2021 15:04, K. R. Foley wrote:
>>>>>
>>>>> The firewall is disabled on the client PC. The client and the 
>>>>> server are on 2 separate subnets separated by a VPN. I am not 
>>>>> aware of any filtering going on between the two, but I can't say 
>>>>> for sure without checking. Is there a list of ports somewhere that 
>>>>> I can check to make sure that they are all being routed over the 
>>>>> VPN? I have already checked everything that I can see in netstat 
>>>>> on the server.
>>>>
>>>>
>>>> For port usage, see these wiki pages:
>>>>
>>>> https://wiki.samba.org/index.php/Samba_NT4_PDC_Port_Usage
>>>>
>>>> https://wiki.samba.org/index.php/Samba_Domain_Member_Port_Usage
>>>>
>>>> https://wiki.samba.org/index.php/Samba_AD_DC_Port_Usage
>>>>
>>>>>
>>>>> Keep in mind that the client can join the domain fine if I enable 
>>>>> SMB1 on the client. I don't want to use SMB1. That is why I am 
>>>>> trying to figure this out. The client seems to think that the 
>>>>> server is asking for SMB1.
>>>>
>>>>
>>>> This is what I am struggling with, by default SMBv1 is turned off 
>>>> from Samba 4.11.0 , if you want to use SMBv1 then you have to 
>>>> explicitly set it in smb.conf. You haven't set it, so your DC 
>>>> shouldn't be using it, perhaps it is the client that is using it ?
>>>>
>>>> Rowland
>>>>
>>> I have disabled SMB1 using "Disable-WindowsOptionalFeature -Online 
>>> -FeatureName SMB1Protocol". If I enable it, it works.
>>>
>>> kr
>>>
>>
>> When you join to a domain, the client searches for a DC, I am now 
>> wondering if something else (that is SMBv1 aware) is replying and 
>> causing the error message, perhaps the old PDC ?
>>
>> Rowland
>>
> Here is the debug from the Windows client. The domain for the old 
> domain is different.
>
> 03/01/2021 09:43:27:468 NetpDoDomainJoin
> 03/01/2021 09:43:27:468 NetpDoDomainJoin: using current computer names
> 03/01/2021 09:43:27:468 NetpDoDomainJoin: 
> NetpGetComputerNameEx(NetBios) returned 0x0
> 03/01/2021 09:43:27:468 NetpDoDomainJoin: 
> NetpGetComputerNameEx(DnsHostName) returned 0x0
> 03/01/2021 09:43:27:468 NetpMachineValidToJoin: 'KR-DEV'
> 03/01/2021 09:43:27:468 NetpMachineValidToJoin: status: 0x0
> 03/01/2021 09:43:27:468 NetpJoinDomain
> 03/01/2021 09:43:27:468     HostName: KR-Dev
> 03/01/2021 09:43:27:468     NetbiosName: KR-DEV
> 03/01/2021 09:43:27:468     Domain: local.richardshapiro.com
> 03/01/2021 09:43:27:468     MachineAccountOU: (NULL)
> 03/01/2021 09:43:27:468     Account: 
> local.richardshapiro.com\administrator
> 03/01/2021 09:43:27:468     Options: 0x25
> 03/01/2021 09:43:27:484 NetpValidateName: checking to see if 
> 'local.richardshapiro.com' is valid as type 3 name
> 03/01/2021 09:43:27:484 NetpValidateName: 'local.richardshapiro.com' 
> is not a valid NetBIOS domain name: 0x7b
> 03/01/2021 09:43:27:577 NetpCheckDomainNameIsValid [ Exists ] for 
> 'local.richardshapiro.com' returned 0x0
> 03/01/2021 09:43:27:577 NetpValidateName: name 
> 'local.richardshapiro.com' is valid for type 3
> 03/01/2021 09:43:27:577 NetpDsGetDcName: trying to find DC in domain 
> 'local.richardshapiro.com', flags: 0x1020
> 03/01/2021 09:43:28:046 NetpDsGetDcName: failed to find a DC having 
> account 'KR-DEV$': 0x525, last error is 0x0
> 03/01/2021 09:43:28:046 NetpDsGetDcName: found DC 
> '\\ss-prod.local.richardshapiro.com' in the specified domain
> 03/01/2021 09:43:28:046 NetpJoinDomainOnDs: NetpDsGetDcName returned: 0x0
> 03/01/2021 09:43:28:046 NetpDisableIDNEncoding: using FQDN 
> local.richardshapiro.com from dcinfo
> 03/01/2021 09:43:28:046 NetpDisableIDNEncoding: 
> DnsDisableIdnEncoding(UNTILREBOOT) on 'local.richardshapiro.com' 
> succeeded
> 03/01/2021 09:43:28:046 NetpJoinDomainOnDs: NetpDisableIDNEncoding 
> returned: 0x0
> 03/01/2021 09:43:28:140 NetUseAdd to 
> \\ss-prod.local.richardshapiro.com\IPC$ returned 384
> 03/01/2021 09:43:28:140 NetpJoinDomainOnDs: status of connecting to dc 
> '\\ss-prod.local.richardshapiro.com': 0x180
> 03/01/2021 09:43:28:140 NetpJoinDomainOnDs: Function exits with status 
> of: 0x180
> 03/01/2021 09:43:28:140 NetpResetIDNEncoding: 
> DnsDisableIdnEncoding(RESETALL) on 'local.richardshapiro.com' returned 
> 0x0
> 03/01/2021 09:43:28:140 NetpJoinDomainOnDs: NetpResetIDNEncoding on 
> 'local.richardshapiro.com': 0x0
> 03/01/2021 09:43:28:140 NetpDoDomainJoin: status: 0x180
> 03/01/2021 09:43:28:155 
> -----------------------------------------------------------------
> 03/01/2021 09:43:28:155 NetpDoDomainJoin
> 03/01/2021 09:43:28:155 NetpDoDomainJoin: using current computer names
> 03/01/2021 09:43:28:155 NetpDoDomainJoin: 
> NetpGetComputerNameEx(NetBios) returned 0x0
> 03/01/2021 09:43:28:155 NetpDoDomainJoin: 
> NetpGetComputerNameEx(DnsHostName) returned 0x0
> 03/01/2021 09:43:28:155 NetpMachineValidToJoin: 'KR-DEV'
> 03/01/2021 09:43:28:155 NetpMachineValidToJoin: status: 0x0
> 03/01/2021 09:43:28:155 NetpJoinDomain
> 03/01/2021 09:43:28:155     HostName: KR-Dev
> 03/01/2021 09:43:28:155     NetbiosName: KR-DEV
> 03/01/2021 09:43:28:155     Domain: local.richardshapiro.com
> 03/01/2021 09:43:28:155     MachineAccountOU: (NULL)
> 03/01/2021 09:43:28:155     Account: 
> local.richardshapiro.com\administrator
> 03/01/2021 09:43:28:155     Options: 0x27
> 03/01/2021 09:43:28:155 NetpValidateName: checking to see if 
> 'local.richardshapiro.com' is valid as type 3 name
> 03/01/2021 09:43:28:155 NetpValidateName: 'local.richardshapiro.com' 
> is not a valid NetBIOS domain name: 0x7b
> 03/01/2021 09:43:28:281 NetpCheckDomainNameIsValid [ Exists ] for 
> 'local.richardshapiro.com' returned 0x0
> 03/01/2021 09:43:28:281 NetpValidateName: name 
> 'local.richardshapiro.com' is valid for type 3
> 03/01/2021 09:43:28:281 NetpDsGetDcName: trying to find DC in domain 
> 'local.richardshapiro.com', flags: 0x1020
> 03/01/2021 09:43:28:749 NetpDsGetDcName: failed to find a DC having 
> account 'KR-DEV$': 0x525, last error is 0x0
> 03/01/2021 09:43:28:749 NetpDsGetDcName: found DC 
> '\\ss-prod.local.richardshapiro.com' in the specified domain
> 03/01/2021 09:43:28:749 NetpJoinDomainOnDs: NetpDsGetDcName returned: 0x0
> 03/01/2021 09:43:28:749 NetpDisableIDNEncoding: using FQDN 
> local.richardshapiro.com from dcinfo
> 03/01/2021 09:43:28:749 NetpDisableIDNEncoding: 
> DnsDisableIdnEncoding(UNTILREBOOT) on 'local.richardshapiro.com' 
> succeeded
> 03/01/2021 09:43:28:749 NetpJoinDomainOnDs: NetpDisableIDNEncoding 
> returned: 0x0
> 03/01/2021 09:43:28:765 NetUseAdd to 
> \\ss-prod.local.richardshapiro.com\IPC$ returned 384
> 03/01/2021 09:43:28:765 NetpJoinDomainOnDs: status of connecting to dc 
> '\\ss-prod.local.richardshapiro.com': 0x180
> 03/01/2021 09:43:28:765 NetpJoinDomainOnDs: Function exits with status 
> of: 0x180
> 03/01/2021 09:43:28:765 NetpResetIDNEncoding: 
> DnsDisableIdnEncoding(RESETALL) on 'local.richardshapiro.com' returned 
> 0x0
> 03/01/2021 09:43:28:765 NetpJoinDomainOnDs: NetpResetIDNEncoding on 
> 'local.richardshapiro.com': 0x0
> 03/01/2021 09:43:28:765 NetpDoDomainJoin: status: 0x180
>
> kr


OK, When you do the join, are you using 
'local.richardshapiro.com\administrator' as the join user ?

If so, try 'LOCAL\administrator' instead.

Rowland

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