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Windows 7 PC Trying To Access Mac Share

Posted on 2010-08-30
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Last Modified: 2013-12-02
I'm using a Windows 7 x64 computer to map a network drive so it can access files hosted on a Tiger (10.4) Mac OS server that our artists place their artwork on. When I try to map the network drive or try to access the location through a Run command on the Windows 7 machine it'll prompt for credentials. Nothing works except for the local admin account that we use for the Mac Server.

The Mac Server is on the network and uses Active Directory. I have an "art group" that has access to the file share on the Mac Server. I'm also able to connect to the Mac Share just fine on a Windows XP machine which leads me to believe that it's something on the WIndows 7 computer.
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Question by:Winsoup
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gfdos earned 500 total points
ID: 33559762
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, Vista will display a logon error repeatedly. The problem is that Vista, 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 Vista, open the Control Panel
2. Switch to “Classic” view
3. Double-click Administration Tools
4. Double-click Local Security Policy
5. Or Secpol.msc
6. Expand “Local Policies” and select “Security Options”
7. Alternate : Type secpol.msc to get editor up then
8. Locate “Network Security: LAN Manager Authentication Level” in the list and double-click it.
9. Change the setting from “Send NTMLv2 response only” to “Send LM & NTLM – use NTLMv2 session if negotiated”
10. Network Security: Minimum session security for NTLM SSP Based (including secure RPC) Clients
11. Change the setting from “require 128 bit” to unchecked (No Minimum)
12. Click OK

the real difference between vista and windows 7 procedure is 10 and 11

It’s rather evil for Microsoft to choose defaults that make file sharing not interoperable with latest Mac OS X. It’s not like they didn’t test it so it must have been a conscious decision to screw with Mac users.
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by:Winsoup
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That worked perfectly, thank you!
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