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Solved: Home Wireless Network - Access Denied

Discussion in 'Networking' started by michaeltee, Oct 19, 2005.

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  1. michaeltee

    michaeltee Thread Starter

    Joined:
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    Computer "A" is a desktop PC, XP Home, SP2. This computer is connected directly to my wireless router.
    Computer "B" is a notebook PC, XP PRO, SP2. This computer shares my internet connection through a wireless adapter card.

    I am able to share my 802.11g internet connection but there's a problem with folder and printer sharing. Computer "A" is able to fully access "B" but "B" cannot access "A". "B" sees "A" (just the computer itself, NOT the shared folders or printers) but when I try to access "A" I get a message stating "\\computername is not accessable. You might not have permission to use this network resource. Contact the administrator of this server to find out if you have permission. Access Denied".

    I followed the instructions using the Wireless Network Setup Wizard but can't seem to get things working. I've tried turning off my firewall but it makes no difference. Can anyone suggest what might be wrong?

    Thanks!
    -Mike
     
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  3. TerryNet

    TerryNet Terry Moderator

    Joined:
    Mar 23, 2005
    Messages:
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    If "A" has a 3rd party firewall, try uninstalling it. Some people have found that just disabling one of these doesn't completely disable it.

    If it's not a firewall issue, you may have some type of registry corruption on "A". With bad luck, it may take a clean reinstall. With better luck, the following may work.

    1. Start > Run > regedit.exe
    2. Go to
    HKEY_LOCAL_MACHINE
    SYSTEM
    CurrentControlSet
    Control
    Lsa
    3. Change the value of a key called "restrictanonymous" to 0 instead of 1 or 2.
    4. Don't change "restrictanonymoussam" value.
    5. The value should be REG_DWORD and Hexadecimal Base. (That's the default for that key)

    6. Restart "A" and access the resources on that PC, it may work properly.
     
  4. michaeltee

    michaeltee Thread Starter

    Joined:
    May 20, 2004
    Messages:
    158
    Wow! Worked like a charm! To have such a problem resolved with a single reply is nothing short of miraculous. I can't tell you how much I appreciate your help :)

    One quick question... I noticed CounterSpy was reluctant to allow the registry change. Does the modification pose an increased security risk?

    Thanks again,
    -Mike
     
  5. TerryNet

    TerryNet Terry Moderator

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    Messages:
    73,540
    "Does the modification pose an increased security risk?"

    No. It just allows file sharing work the way it is supposed to.

    You are welcome, Mike.
    Terry
     
  6. Bobonong

    Bobonong

    Joined:
    Oct 21, 2005
    Messages:
    56
    I was staggered to see Mike's networking problem - EXACTLY the same as mine - he couldn't have described it better! Your solution, Terry, worked like a dream. Many many thanks - and to you too, Mike, for posing the question.
    I've spent the last week on and off trying to sort this one out. Is this a common problem I wonder? If so why hasn't Microsoft addressed it? Maybe they have somewhere but I certainly couldn't find reference to it.
    Keep up the good work Terry.
    Cheers, Bob
     
  7. TerryNet

    TerryNet Terry Moderator

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    Glad this worked for you too, Bob. Wow! Two happy customers for the price of one! I feel good.

    I ran into this problem with my very first networking attempt (see my Join Date if you care when that was). I worked on it for weeks, got help from this forum, spent $35 for 3 hours of quality time on the phone with Microsoft, and finally "fixed" the problem with a fresh install of XP.

    Since then I found the registry fix (on another forum) and estimate that 8 to 10 folks have used it to fix their system, another 3 or 4 have had to do an XP install, and some others have decided to live with a "one way" network.

    I'm convinced that the problem is caused by at least two different registry corruptions. Your result proves that there is at least one. Since every legitimate and illegitimate application, virus, worm, adware and spyware that gets on our computers mess with the registry, it's impossible to stop all registry corruption.

    I want to end this rambling with a CAUTION: the great majority of "access denied" messages are caused by firewall issues; and second place probably goes to incorrect configuration or missing services/protocols, etc. So don't advertise the registry or install fix until other issues are explored. As you mentioned, Mike deserves credit for his superb description of his problem, network, troubleshooting, etc.
     
  8. Bobonong

    Bobonong

    Joined:
    Oct 21, 2005
    Messages:
    56
    Thanks for your further comments, Terry.

    I’m no computer ‘Dumbo’ but networking is new to me and still bit of a black art. I struggled for over a week trying to sort this one out, trying all sorts of tweaks and fiddles. I utilised diagnostic tests like pinging, Net View, IPConfig and XP (online) diagnostics but everything seemed OK indicating to me a simple 'permissions' problem. I also I got a bit mixed up over some references I’d found re: stopping/starting the Wireless Zero Configuration service. I am still not sure what software actually controls the wireless network connection!

    I was aware that my firewall (ZoneAlarm) could well be my problem and tried setting it up to allow access by the 2nd PC. But even turning it off didn’t help – although I now take your point that I may have had to un-install it to have the desired effect. Luckily I then stumbled across your solution on this forum. Good old Google. I say!

    Bit of a heart attack today however – re-booting both PCs just now it seemed at first that the problem had re-manifested itself – I could see the ‘SharedDocs’ but not the folders I had manually configured to be shared. But after about 5 minutes miraculously access was allowed and I could see the other PC as intended. I seem to remember now reading something about there sometimes being a time-lag.

    Anyway, thanks again Terry and Mike. Things are looking good again over here in Cardiff.

    Regards, Bob J
     
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