Local network problem

March 3, 2011 at 13:19:29
Specs: Windows XP SP3, Intel P4/ 2 gig
I have a local network comprising 8 computers, all using Win XP SP3. I have sharing enabled on all computers over the network. Recently (in last 2 weeks) two of the computers are not able to be seen in My Network Places and are not able to be accessed over the network. They are seen as a computer in MSHOME but can not be accessed. It states "you do not have permission to access this computer" I have not changed any settings and do not have a password enabled for logon. The Guest account is not enabled, but occasionally when trying to access one of the errant computers, it asks to logon with the guest account(but is greyed out when tryig to type in a password). Each of the errant omputers can log onto all the other computers on the network, except each other. Any ideas on where to look, I've tried everything I can think of.


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March 3, 2011 at 15:04:23
The best way to do sharing in a "workgroup" network (as compared to a domain) is always to create user accounts on the computers with shares.

Here's an example based on 3 computers, all with one shared folder on each.

PC 1:

Login information:
username: Brent
password: Password

Shared folder = C:\BrentShare

PC 2:

Login information:
username: Carol
password: pAssword

Shared folder = C:\CarolShare

PC 3:

Login infomation:
username: David
password: paSsword

Shared folder = C:\DavidShare

Now, on each computer, you want to allow the other two access to the share.

So, on PC 1 you would create two user accounts using the exact same username and password Carol and David use to logon at bootup (as described above).

You would then add those two user accounts to the ACL on the share C:\BrentShare and you would grant appropriate permissions (read/write etc).

Then on PC 2, you would do the same with user accounts Brent and David and finally on PC 3 with user accounts Brent and Carol.

Once finished, Brent could map a drive to the shares on PC 2 and 3 and never be asked for credentials and have whatever access you, as the admin, have granted his user account on those shares.

Now, this is a little bulky, which is one of the reasons we have domains. For your situation, I would simplify things by bringing in an extra computer and making it into a file server. Move the shared folders off of the other 8 PC's and onto the file server, do the sharing/user accounts on it. As per my example above, you would have a PC 4 as your file server, you would create 3 shared folders on it, add the 3 user accounts (once only) and then add them to the appropriate shares. and reduce your administrative overhead.

It matters not how straight the gate,
How charged with punishments the scroll,
I am the master of my fate;
I am the captain of my soul.

***William Henley***

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March 4, 2011 at 07:26:26
Curt R

Thanks for the reply. This system has run flawlessly for 6 years. I know there is some registry setting that must have changed, but I just can't seem to find it. I don't remember installing any programs or updates on these two computers, but it must have been. I'll keep hacking on it until I get a response.

Thanks Jerre

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March 5, 2011 at 09:22:10
A Fix! A Fix!

My hair can once again start to grow. Something changed a registry setting from allow (0) to not allow(1). If you ever have this problem go to

Local Machine\System\CurrentControlSet\Control\Lsa and change Value name: RestrictAnonymous Value type:DWORD from 1 back to 0 Apparently there are numerous spywre/worms that have been known to change this value and you need to check if this value gets changed back to 1 on reboot. If it does then you need to track down the offending program and eliminate it. Much thanks to winhlp.com for the correct fix.

Jerre Smiling again!

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