Windows 7 Forums
Welcome to Windows 7 Forums. Our forum is dedicated to helping you find support and solutions for any problems regarding your Windows 7 PC be it Dell, HP, Acer, Asus or a custom build. We also provide an extensive Windows 7 tutorial section that covers a wide range of tips and tricks.

Windows 7: Cannot Access MacBook on W7 Workgroup After Upgrade

03 Dec 2009   #1

W7 Pro
Cannot Access MacBook on W7 Workgroup After Upgrade

I have had a Windows workgroup for years, linking PCs and Macs as well as a Linkstation Network Drive through a Time Capsule Router/Hard Drive Combo. Immediately after upgrading from Vista Business to W7 Professional on my Sony Vaio VGN-Z750D, I can see the Time Capsule and MacBook but can not access the MacBook Pro. I am able to access the Linkstation and the Time Capsule. However, the system does not ask me for a username and password when I try to access the MacBook Pro, and I get an error message that Windows cannot access the MacBook. The problem seems to be on the W7 end, for I am able to access the Sony on the MacBook Pro.

The workgroup name is the same on all computers. I had to reset the workgroup name on the Sony, because for some reason the W7 upgrade renamed the workgroup name to WORKGROUP without asking. I reset it to the name used on all our mchines. The only variable changed is the W7 upgrade.

Please advise. Thanks.

My System SpecsSystem Spec
03 Dec 2009   #2

W7 Pro

FIXED IT!!! Found the answer on the W7 Forum

Accessing Mac OS X Windows Sharing from Windows 7
Windows 7 will not work with Mac OS X Windows file sharing support by default. If you attempt to access a folder shared from Mac OS X, W7 will display a logon error repeatedly.
The problem is that W7, by default, will only use NTLMv2 for authentication, which is not supported by Mac OS X's Windows Sharing service.
The other problem is the Minimum Session Security for NTVLM SSP based Clients.
To get around this:
1. In W7, open the Control Panel
3. Double-click Administration Tools
4. Double-click Local Security Policy
5. Expand "Local Policies" and select "Security Options"
6. Locate "Network Security: LAN Manager Authentication Level" in the list and double-click it.
7. Change the setting from "Send NTMLv2 response only" to "Send LM & NTLM - use NTLMv2 session if negotiated"
8. Network Security: Minimum session security for NTLM SSP Based (including secure RPC) Clients
9. Change the setting from "require 128 bit" to unchecked (No Minimum)
10. Click OK
My System SpecsSystem Spec

 Cannot Access MacBook on W7 Workgroup After Upgrade

Thread Tools

Similar help and support threads
Thread Forum
Win 7 PC can't access workgroup pcs but can use printers
I have a Win7 Pro 64bit SP1 laptop that for over a year was happily on our hardwired work workgroup. A couple of weeks ago I formatted the laptop and ever since I am able to see and use the networked printers but can't see any computers on the network through the Network section on the Win7 pc. ...
Network & Sharing
Why can't I access my workgroup computer.
I can't access my workgroup computer I don't know why.
Network & Sharing
cannot access on a workgroup
I have 3 Acer Aspires on workgroup, a 6930, a 5517 and a 5732Z, They all have Windows 7 Home Premium. All the computers can access each others public files except none can access the 6930. It appears in the other two's network screen, but when I attempt to access the 6930 is states that "Windows...
Network & Sharing
No Workgroup Device Access After W7Ult Upgrade
For several years I have had a Windows Workgroup network including an XP PC Desktop, MacBook Pro, Time Capsule Router, Buffalo Linkstation Pro, Sony Vaio (Upgraded to W7Ult) and two other Macs. I recently upgraded the PC Desktop to Windows 7 Ultimate through a custom install (complete reinstall). I...
Network & Sharing
Win 7 Upgrade on macbook pro
My dilemma . . . I got the discounted student download of Win 7 Pro Upgrade for $29. I currently have XP installed on my desktop pc. My plan was to install Win 7 on my macbook pro so I could dual-boot (which I did but now won't accept the product key). After researching, since Win 7 Upgrade...
Installation & Setup

Our Sites

Site Links

About Us

Find Us

Windows 7 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 7" and related materials are trademarks of Microsoft Corp.

Designer Media Ltd

All times are GMT -5. The time now is 05:12.
Twitter Facebook Google+ Seven Forums iOS App Seven Forums Android App