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Thread: Mac can see PC shared folders, but can't open them...

  1. #1
    Alan Browne
    Guest

    Mac can see PC shared folders, but can't open them...

    Preamble: I had a well functioning home network with the PC and Mac each
    seeing and read/writing to each others shared folders.

    "Something" (I have no idea what) happened a couple weeks ago, and now,
    while the PC can see, read, write to the Mac; the Mac can see shared
    folders on the PC, but cannot open them. (SMB).

    I have run the gamut of making changes on the PC and the effect is nada.
    Using a laptop, I can setup a proper connection with the mac, but that
    laptop can't access the shared folders on the PC either (though it can
    "see" the folders). I'll have another laptop here on the weekend, and
    I'll keep delving into it, but...

    I am going NUTZ!!! (Esp. as I have no idea of what I may have changed).

    Setup:

    +----------------------------------------------------------------------

    cablemodem <--->router<--->PC-WinXP*
    ^
    |
    +------->Printer
    |
    |
    +------->iMac (OS X 10.6.2)
    |
    |
    +--Fusion-WinXP (Virtual PC on Mac)


    *PC-WinXP is where the problem seems to be.

    +----------------------------------------------------------------------

    The PC ethenet is configured : TCP/IP, file/print sharing and MS Client.
    (These have been re-installed).

    I've also run the network wizard (many times, alas). I've turned the
    firewall off (and back on).

    Folders (and 1 full disk) shares are set using the "usual" PC sharing
    flags (Read/Write); I've also tried the older-detailed mode. No change.

    Likewise, the virtual WinXP on the Mac can see the folders on the PC,
    but cannot access them either. ("... not accessible. You might not
    have permission to use this network resource." ). But from the PC, I
    can read-write the shared folders on the virtual PC (on the Mac). (In
    Fusion it accesses the ethernet card of the Mac directly).

    When I had a netbook hooked up, it worked fine with the Mac, both sides
    seeing and read/writing to the other. Not with the problem PC, however.

    To be sure I'm not an expert in networking, but this should be slam-dunk
    easy to solve. But ...

    Any help appreciated. Again, this all worked smoothly a couple weeks ago...

    --
    gmail originated posts are filtered due to spam.

  2. #2
    Alan Browne
    Guest

    Re: Mac can see PC shared folders, but can't open them...

    On 10-01-30 11:28 , Alan Browne wrote:

    <Problem description snipped>

    On 10-01-28 16:29 , Alan Browne wrote:

    Well, I finally found the solution, which had a weight of absolute zero
    on the obvious scale. It involves editing (or in my case adding) a
    registry value in an obscure corner of the WinXP registry.

    More proof that Microsoft are absolute amateurs when it comes to system
    design.

    Here is the descriptive link:
    http://forums.macrumors.com/showthre...03#post3422203

    Here is the essential of the fix: (In my case, 15 was not enough, so I
    tried 18 and that did it).

    Thanks to E W T Heckman for posting that solution to Microsoft's
    incredibly bad system.

    In regedit find:

    HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\lanmanserver\parameters

    3. Look for an entry named "IRPStackSize" in the right pane. If it
    doesn't exist you will have to create it. To create the entry,
    right-click in the right hand pane and select New --> DWORD Value. Then
    enter "IRPStackSize". (I had to create this entry on my machine.)

    4. Double-Click the "IRPStackSize" entry to change the value.

    5. Click the "Decimal" radio button in the Base group.

    6. If there's already an entry, increase the value by a small amount. If
    it's set to zero, then Microsoft recommends starting at 15. (On my
    machine, a setting of 18 resolved the problem.)

    7. Save your changes by clicking the OK button.

    8. Close the Registry Editor and reboot the computer.

    --
    --
    gmail originated posts are filtered due to spam.

  3. #3
    Rambo
    Guest

    Re: Mac can see PC shared folders, but can't open them...

    Alan Browne wrote:
    > On 10-01-30 11:28 , Alan Browne wrote:
    >
    > <Problem description snipped>
    >
    > On 10-01-28 16:29 , Alan Browne wrote:
    >
    > Well, I finally found the solution, which had a weight of absolute zero
    > on the obvious scale. It involves editing (or in my case adding) a
    > registry value in an obscure corner of the WinXP registry.
    >
    > More proof that Microsoft are absolute amateurs when it comes to system
    > design.
    >
    > Here is the descriptive link:
    > http://forums.macrumors.com/showthre...03#post3422203
    >
    > Here is the essential of the fix: (In my case, 15 was not enough, so I
    > tried 18 and that did it).
    >
    > Thanks to E W T Heckman for posting that solution to Microsoft's
    > incredibly bad system.
    >
    > In regedit find:
    >
    > HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\lanmanserver\parameters
    >
    >
    > 3. Look for an entry named "IRPStackSize" in the right pane. If it
    > doesn't exist you will have to create it. To create the entry,
    > right-click in the right hand pane and select New --> DWORD Value. Then
    > enter "IRPStackSize". (I had to create this entry on my machine.)
    >
    > 4. Double-Click the "IRPStackSize" entry to change the value.
    >
    > 5. Click the "Decimal" radio button in the Base group.
    >
    > 6. If there's already an entry, increase the value by a small amount. If
    > it's set to zero, then Microsoft recommends starting at 15. (On my
    > machine, a setting of 18 resolved the problem.)
    >
    > 7. Save your changes by clicking the OK button.
    >
    > 8. Close the Registry Editor and reboot the computer.
    >

    It's explained here:
    http://www.webopedia.com/TERM/I/IRPStackSize.html
    and how to do it here:
    http://support.microsoft.com/?scid=k...5089&x=14&y=12


  4. #4
    Alan Browne
    Guest

    Re: Mac can see PC shared folders, but can't open them...

    On 10-01-31 17:43 , Rambo wrote:

    > It's explained here:
    > http://www.webopedia.com/TERM/I/IRPStackSize.html
    > and how to do it here:
    > http://support.microsoft.com/?scid=k...5089&x=14&y=12


    What part of "I finally found the solution," did you have trouble with?


    --
    gmail originated posts are filtered due to spam.

  5. #5
    Alan Browne
    Guest

    Re: Mac can see PC shared folders, but can't open them...

    On 10-01-31 17:43 , Rambo wrote:

    > It's explained here:
    > http://www.webopedia.com/TERM/I/IRPStackSize.html
    > and how to do it here:
    > http://support.microsoft.com/?scid=k...5089&x=14&y=12


    Except for that little problem that when you're actually trying to fix
    it, MS does not lead you to that fix.

    MS are idiots for having such poor s/w design that the above fix is
    needed and extra stupid for not having that fix easier to find at their
    site.

    --
    gmail originated posts are filtered due to spam.

  6. #6
    Char Jackson
    Guest

    Re: Mac can see PC shared folders, but can't open them...

    On Sun, 31 Jan 2010 13:36:35 -0500, Alan Browne
    <alan.browne@FreelunchVideotron.ca> wrote:

    >On 10-01-30 11:28 , Alan Browne wrote:
    >
    ><Problem description snipped>
    >
    >On 10-01-28 16:29 , Alan Browne wrote:
    >
    >Well, I finally found the solution, which had a weight of absolute zero
    >on the obvious scale. It involves editing (or in my case adding) a
    >registry value in an obscure corner of the WinXP registry.
    >
    >More proof that Microsoft are absolute amateurs when it comes to system
    >design.
    >
    >Here is the descriptive link:
    >http://forums.macrumors.com/showthre...03#post3422203
    >
    >In regedit find:
    >
    >HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\lanmanserver\parameters
    >
    >3. Look for an entry named "IRPStackSize" in the right pane. If it

    <snip>

    I had the same problem on two of my PC's a few months ago. In a pure
    PC environment, the symptoms are the same but the error message is
    different, so I didn't realize your Mac/PC environment was having the
    same problem. Glad you got it sorted.


  7. #7
    Alan Browne
    Guest

    Re: Mac can see PC shared folders, but can't open them...

    On 10-02-01 2:14 , Char Jackson wrote:

    > I had the same problem on two of my PC's a few months ago. In a pure
    > PC environment, the symptoms are the same but the error message is
    > different, so I didn't realize your Mac/PC environment was having the
    > same problem. Glad you got it sorted.


    Thanks. Though all it accomplished was increasing my resolve to
    eliminate PC's from my life.

    --
    gmail originated posts are filtered due to spam.

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