Win 10 not connecting to Mac server...

[MalicE]

Hi guys

So I have a very peculiar problem. Our file server was infected with randsomware last week so we're back to the Mac Mini Server till IT has rectified the problem.

Now my problem comes in when I try to connect to the mac server it just keeps telling me my username or password is incorrect. Now initially I thought this was a Win 10 issue seeing as the Win 7 machines connect fine. But after a bit more testing it turns out that it's only the machines that were upgraded from Win 7 to Win 10 that have this problem. The clean install Win 10 systems connect fine as well.

Now I have exhausted my google options and still not working

Anybody else run into this problem?

Any advice at this stage would be appreciated as it is holding up the workflow now.

Thanks in advance!

 

[SauRoNZA]

It's something you need to disable with regards to the authentication mechanism.

I can't remember exactly but it has to do with NTLM Authentication that needs to be switched off.

Let me Google quick.

 

[SauRoNZA]

It's either one of these two...

https://lime-technology.com/forum/i...622f07f2d0197b7013e7c69f827a9b&topic=37835.15

Had this problem too - it's because Win10 insists on an authenticated SMB login. You can disable it by creating the following value (a DWORD):

HKLM\SYSTEM\CurrentControlSet\Services\LanmanWorkstation\Parameters\AllowInsecureGuestAuth

Set the value to 1 , it should work straight away then.

https://discussions.apple.com/thread/5483728?start=0&tstart=0

@thePod7, your suggestion on Setting the Lan Manger Authentical Level worked! Only thing missing is the instructions on how to Set the Lan Manager Authentication Level. So I've included it below. Hope this helps someone else having the issue!

On command line....

1. Enter “gpedit.msc” in the Start Search box.
2. Open “Computer Configuration”/Windows Settings/Security Settings/Local Policies/Security Settings.
3. In the right pane, enable the following policies:

Network access: Allow anonymous SID/name translation
Network access: Let Everyone permissions apply to anonymous users

Also please disable the following policies.

Network access: Restrict anonymous access to Named Pipes and Shares
Network access: Do not allow anonymous enumeration of SAM accounts
Network access: Do not allow anonymous enumeration of SAM accounts and shares

Change the following policy:
Network security: LAN Manager authentication level

Change the value to “Send LM & NTLM - use NTLMv2 session security if negotiated”.

 

[MalicE]

It's either one of these two...

https://lime-technology.com/forum/i...622f07f2d0197b7013e7c69f827a9b&topic=37835.15

Had this problem too - it's because Win10 insists on an authenticated SMB login. You can disable it by creating the following value (a DWORD):

HKLM\SYSTEM\CurrentControlSet\Services\LanmanWorkstation\Parameters\AllowInsecureGuestAuth

Set the value to 1 , it should work straight away then.

https://discussions.apple.com/thread/5483728?start=0&tstart=0

@thePod7, your suggestion on Setting the Lan Manger Authentical Level worked! Only thing missing is the instructions on how to Set the Lan Manager Authentication Level. So I've included it below. Hope this helps someone else having the issue!

On command line....

1. Enter “gpedit.msc” in the Start Search box.
2. Open “Computer Configuration”/Windows Settings/Security Settings/Local Policies/Security Settings.
3. In the right pane, enable the following policies:

Network access: Allow anonymous SID/name translation
Network access: Let Everyone permissions apply to anonymous users

Also please disable the following policies.

Network access: Restrict anonymous access to Named Pipes and Shares
Network access: Do not allow anonymous enumeration of SAM accounts
Network access: Do not allow anonymous enumeration of SAM accounts and shares

Change the following policy:
Network security: LAN Manager authentication level

Change the value to “Send LM & NTLM - use NTLMv2 session security if negotiated”.

you sir are a gentleman and a scholar!

Eleventy billion internet points to you!

 

[SauRoNZA]

Been there done that, so I know the pain.

Glad you got sorted.