Want to protect your cyber security and still get fast solutions? Ask a secure question today.Go Premium

x
?
Solved

Too many networks connections

Posted on 2001-08-07
7
Medium Priority
?
257 Views
Last Modified: 2007-02-13
We've got a Windows NT-based network spread over 5 cities, with about 40 servers altogether, and a lot of shares (several thousand).  Servers are running NT 4.0 SP5.

Some of the Win95 PCs seem to go into some sort of discovery process just after they log on.
Most of the time, its not a problem, but some appear to hang on to the shares they find, and eventually end up with 256 Network connections.  Then, when someone tries to map a new drive, or printer on their PC, they get the message "Too many networks connections"

I found this "discovery process" by going into a DOS prompt, and typing:
NET USE
The PCs that exhibit this problem have a few "normal" connections:
Status        Local name    Remote name
OK            M:            \\ELRB0055\AutoCAD

and a whole bunch of unnamed connections:
Status        Local name    Remote name
OK                          \\ELRB0079\X_Drive

It looks to me like the "unnamed connections" is a listing of every single share on our network.  It goes through all the shares on one server, then the next server, sometimes hits any user's PCs that have their hard drives shared, and eventually just quits after 256 total connections.

On some machines, it does this immediately after logging on, causes a problem for about a half-hour, and then goes away (No more unnamed connections).  One some other machines, I get a blue screen of death when it hits 256.
I can watch shares get added slowly to the NET USE list, and, if I catch it & remove them fast enough I'm OK.  If I wait more than 5 or ten minutes, I get the blue screen.

We're running Norton Anti-Virus 5, and McAfee Remote Desktop 32 client on these machines, if that matters.  I have, however removed those programs from the StartUp, and had the same problem.

Anybody got any ideas?
0
Comment
Question by:DavePlumb
7 Comments
 
LVL 1

Expert Comment

by:CompuNerd19
ID: 6360693
Turn off file and print sharing for all the 95 workstations (good policy to store information on the servers and not the workstations themselves).  Check any scripts you may have that attempt to map drives automatically.  Netbios works on port TCP/UDP 135-139.  Just an idea, hope it helps.
0
 
LVL 63

Expert Comment

by:SysExpert
ID: 6361393
A similar problem that was solved.

-----------------
Removed all shortcuts through the mapped drive and it stopped happening.

From: vsamtani           Date: 04/11/2001 08:14AM PST
   Just a thought:

  It may also happen if they are using shortcuts that link to the mapped folfer or something within it.    I have a policy file on the domain controllers where the "Disable Link file tracking" policy is ticked     for the default user (it's under Windows NT Shell \ Restrictions), and I have a vague memory that without   this I used to have a rogue mapped drives problem.
-------------------------------------------

I hope this helps !
0
 
LVL 41

Expert Comment

by:stevenlewis
ID: 6362446
0
Technology Partners: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

 

Author Comment

by:DavePlumb
ID: 6385879
Well, I've tried both the Shortcut trick (I removed everything from my desktop) and upgrading my winsock.  
Still have the same problem.
Anyone else?
0
 
LVL 63

Expert Comment

by:SysExpert
ID: 6385968
try this !

From: pslh        Date: 03/25/2001 06:22AM PST
               
                 Go to the Control Panel, Folder Options, View, unchecked the box
                 [ ] Automatically search for network folders and printers.
                 OK. Restart computer.

   It will stop the delay due to searching for the network folders and printers whenever you opened Windows explorer.
NT and win9x performance enhancers.
http://www.winguides.com/registry/category.php/30/             
--------------------------
Also -
Intermittent slow network connection with games.
From: aidy                Date: 12/20/2000 09:45AM PST
 Yay! I found what was causing the problem! Would anyone believe it was simply a windows cache setting?!         Geez!  Thank

--------------------------
Check that NetBeui i not being used, and that there are no viruses !!

I hope this helps !

0
 

Author Comment

by:DavePlumb
ID: 6483605
Turns out it was a virus.

Thanks, all for your help.
0
 

Accepted Solution

by:
SpideyMod earned 0 total points
ID: 7956725
PAQ'd and points refunded.

SpideyMod
Community Support Moderator @Experts Exchange
0

Featured Post

Concerto Cloud for Software Providers & ISVs

Can Concerto Cloud Services help you focus on evolving your application offerings, while delivering the best cloud experience to your customers? From DevOps to revenue models and customer support, the answer is yes!

Learn how Concerto can help you.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

If you’re involved with your company’s wide area network (WAN), you’ve probably heard about SD-WANs. They’re the “boy wonder” of networking, ostensibly allowing companies to replace expensive MPLS lines with low-cost Internet access. But, are they …
WARNING:   If you follow the instructions here, you will wipe out your VTP and VLAN configurations.  Make sure you have backed up your switch!!! I recently had some issues with a few low-end Cisco routers (RV325) and I opened a case with Cisco TA…
There's a multitude of different network monitoring solutions out there, and you're probably wondering what makes NetCrunch so special. It's completely agentless, but does let you create an agent, if you desire. It offers powerful scalability …
Monitoring a network: why having a policy is the best policy? Michael Kulchisky, MCSE, MCSA, MCP, VTSP, VSP, CCSP outlines the enormous benefits of having a policy-based approach when monitoring medium and large networks. Software utilized in this v…

571 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question