[SOLVED] Vista SP1 changed sharing behavior

[tripap]

I upgraded Vista Ultimate to SP1 today and after the update, I can no longer see the folder and device shares that used to be visible to another computer running XP SP2. If I try NET VIEW from the XP computer, I get "System error 58 has occurred" and no information. Priot to the upgrade, all of the network shares were visible to my XP computers. I also upgraded a laptop computer running Vista Home Premium to SP1, and it has no problem seeing the shares across the network, so the problem appears to be particular to either XP or maybe any non-Vista OS. Ideas?

[jcgriff2]

Originally Posted by tripap

I upgraded Vista Ultimate to SP1 today and after the update, I can no longer see the folder and device shares that used to be visible to another computer running XP SP2. If I try NET VIEW from the XP computer, I get "System error 58 has occurred" and no information. Priot to the upgrade, all of the network shares were visible to my XP computers. I also upgraded a laptop computer running Vista Home Premium to SP1, and it has no problem seeing the shares across the network, so the problem appears to be particular to either XP or maybe any non-Vista OS. Ideas?

Hi . . .

Welcome to the Tech Support Forum - Vista.

I believe that "Error 58" refers to issues involving security. Knowing Vista, I would look first at permissions. Have the groups or users file permissions changed? Was a group added somehow by Vista SP1? There could be an overriding "Deny" in a User Group (like "Everyone") to a user or user group's "Allow". Also check ownership of the shared file(s).

I would also check in and visit the Guest account. Is it active? If yes, assure it is password protected. Is the entrance to the Vista shared folder the "Anonymous" group?

That's all I can think of at this time. If I come up with any additional info, I'll post again.

Regards. . .

jcgriff2

[jcgriff2]

Just thought of something else. . .

Have you checked the Event Viewer on the XP system(s) at the time of failure to see the Vista system?

Is the NetBIOS name the same in the Vista SP1 system as the XP systems?

regards. . .

jcgriff2

[jcgriff2]

Another thought. . .

Are you able to - or have you already - tried to view the Vista SP1 pc in question using a NON-Sp1 Vista PC? A simple tie in and a quick "net user" command execution may bring a clue to light.

jcgriff2

[tripap]

I've checked the event logs on the XP machine, and there were no errors, and even no informational entries that seemed related to the attempts to access the Vista computer. The idea of trying to access the Vista SP1 computer from another Vista computer not running SP1 is a good one, but since all of my Vista computers have now been upgraded, it would be difficult to perform that test. I did look carefully at permissions, and the folders of concern on the Vista SP1 machine provide Everyone with Full Control on those folders, so I wouldn't expect that to be the issue. I've also checked the File and Printer sharing ports on both the XP and Vista computers and they match and are enabled through the firewalls. I'm still stumped.

[tripap]

I've solved the problem of not being able to see network shares on my Vista machine from an XP machine after installing Vista SP1. The problem was authentication level for LAN Manager. Vista defaults to NTLMv2, and my Vista machine only allowed that level. My XP machine was set for LM & NTLM, but did not deal with NTLMv2. I solved the problem by going into Local Security Policy on both machines and changing the Network security: LAN Manager authentication level to "Send LM & NTLM - use NTLMv2 session security if negotiated" on both. I had to reboot to have the change take effect, and the problem was eliminated.

[geertdo]

You could probably resolve this issue by synchronizing the time between the two computers. Vista SP1 uses Kerberos authentication as default auth mechanism. That's better than NTLM.

Hope this helps...