Question

Applies to

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Windows 7 cannot connect to Mac - Help!

willroz asked on

I have an old T-20 running xpsp3. I just got a new laptop running windows7 home premium. My wife's Mac G5 sees the T-20 but cannot find the new laptop. How to connect the Win7 machine to the Mac?

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Answer

Shinmila H replied on

Hey willroz,

If Group Policy Editor is available for your version of Windows, configure the following setting.

Note: Group policy editor is available only in Professional, Ultimate and Enterprise edition of Windows 7. You will not have the Local Group Policy Editor available in the Windows 7 Starter and Home Premium editions. If Group Policy Editor isn’t supported in your version of Windows, go to Method 2.

Method 1: Via Group Policy

1. Go to Start, type secpol.msc and press Enter to get editor up.
2. Locate "Network Security: LAN Manager Authentication Level" in the list and double-click on it.
3. Change the setting from " NTMLv2 response only" to "Send LM & NTLM - use NTLMv2 session if negotiated".
4. Network Security: Minimum session security for NTLM SSP Based (including secure RPC) Clients.
5. Change the setting from "require 128 bit" to "unchecked (No Minimum)".
6. Click OK.

Method 2: Via Registry.

Important: This section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click the windows help article below.

Back up the registry

http://windows.microsoft.com/en-us/windows7/Back-up-the-registry

1. Go to start, type regedit.exe and press Enter.

2. Locate the following key.

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Lsa

3. In the ‘Value’ pane of the Registry Editor, check to see if the following DWORD exists: lmcompatibilitylevel. If it does, perform the following:
Right-click lmcompatibilitylevel and select ‘Modify’ from the pop-up menu.

4. Enter a Value data of 1.

5. Click the ‘OK’ button.

If the lmcompatibilitylevel DWORD does not exist, create a new DWORD.

Here's how:

        a. From the Registry Editor menu, select Edit, New, DWORD (32-bit) Value.
        b. A new DWORD called "New Value #1" will be created.
        c. Rename the new DWORD to lmcompatibilitylevel.
        d. Right-click lmcompatibilitylevel and select ‘Modify’ from the pop-up menu.
        e. Enter a Value data of 1.
        f. Click the ‘OK’ button.
        g. Close registry editor and restart the computer.

Test and see if this helps.

Regards,

Shinmila H - Microsoft Support

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Answer

Shinmila H replied on

Hey willroz,

Back up the registry

http://windows.microsoft.com/en-us/windows7/Back-up-the-registry

Here's how:

Test and see if this helps.

Regards,

Shinmila H - Microsoft Support

Visit our Microsoft Answers Feedback Forum and let us know what you think.

2 people found this helpful

Craig Donald replied on

Shinmila,

I have a similar concern, but my MAC is an iMac desktop. My Windows 7 laptop sometimes sees my iMac, but usually does not - very frustrating. Is there a fix for this????

My Windows 7 Home Premium Edition does not support the Group Policy Editor, so I attempted option #2. It did not work.

Thanks, Craig

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Craig Donald replied on

Another note...I attempted creating a new DWORD lmcompatibilitylevel and then tried lncompatibilitylevel. I thought maybe lmcompatibilitylevel was a typo. Neither DWORD set to "1" worked.

Thanks, Craig

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Zekester137 replied on

Shinmila,

I have a similar concern, but my MAC is an iMac desktop. My Windows 7 laptop sometimes sees my iMac, but usually does not - very frustrating. Is there a fix for this????

My Windows 7 Home Premium Edition does not support the Group Policy Editor, so I attempted option #2. It did not work.

Thanks, Craig

It looks to me like what you need is lmcompatibilitylevel where the first character is a lowercase "L" - not a capital "I". The text makes it look like it's an "L" but if you look above, it mentions "LM" (for LAN Manager). Maybe that will help - I'm going to try that.

Zeke, esq.

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JoniElliott - Warden replied on

Shinmila,

That worked like a charm on my Win 7!! I've been so frustrated in trying to connect my Mac/Windows. Is Win 7 still in development?? I was wondering why frem xp to 7, connecting to a MAC become soooo troublesome?! I've been so several mac forums and that complaints are wide spread. I love both PC's and MAC's. I have one of each and always will. I just need them to work seamlessly.

Thanks for the (windows registry) trick and wow. Will I have to do this more than once??

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JoniElliott - Warden replied on

best thing to do is to highlight and copy/paste all the essential "keywords" being used to do this trick, which is exactly what I did.

example:

lmcompatibilitylevel (copied/pasted)

DWORD (copy/pasted)

if its wrong then its their fault *LOL*

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EduardoPietri replied on

Great! It worked for me. I have been dealing with this issue for the last few days trying to unplug my Windows SBS 2003 for good and moving to a Mac Mini Server, and reading a ton of posts in Apple Forums could find an answer. Thanks a lot. I'll see if I can pass it along to the Apple Forums.

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PatUb replied on

Hi Shinmila,
I tried both methods and it doesn't work !!! Note that I didn't restore the first method to default when I tried the second one... (ok, I created a DWORD with I and not L, the lmcompatibilitylevel value was 1 done by the first method, I guess )
Details: Error code: 0x80070035
The network path was not found
But I can see the computer on the Network
The problem found is "The remote device or resource won't accept the connection"

I have Windows 7 Enterprise 64bit.
Do I have to create DWORD (64-bit) instead ?

It works perfectly with ssh under Linux/Ubuntu

Do you have a solution ?

Thanks,

Patrick - UNIFR

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PatUb replied on

OK,
restarting the computer was not enough.
I had to shut down and start the computer again.

So, windows is connected to the mac but there is no directories/files in explorer.
oups, in fact, connection failed...

Connection from Mac to Windows failed also !

Any idea ?

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Nicholas_W_ replied on

Hello PatUb

To avoid confusion and because this thread is old, please begin your own, new thread about YOUR specific problem and computer. State your current IE version and full Windows version (e.g., WinXP SP3; WinXP 64-bit SP2; Vista SP2; Vista 64-bit SP2; Win7; Win7 SP1; Win7 64-bit; Win7 64-bit SP1) in your first post. Thank you.

How to begin your own, new thread
http://answers.microsoft.com/en-us/Page/faq#faqGettingAnswers5

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