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mapped drive will not stay connected, after some hours of not using it cannot connect

we have a computer on a 2003 domain that all it does is scan to network and has 3 mapped drives to it.  At some random points it will lose its ability to access the mapped drives. they do not disappear.  it says we cannot connect. i can remote into the computer when this happens and see all the shares on the server but cannot access them.  i can access the server through dns name or ip address.
Why do these shares drop off at random times? The only thing i have come up with is that the licensing for the server keeps coming up about being in per server mode and that we only have 5 cals installed but have 12 computer connected?  any ideas?
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bowlerman25
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bowlerman25
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Felicia KingCommented:
Are there any events in the event log (system or application) that look like they have anything to do with the networking or shares or even licensing? I never install 2003 servers in the licensing mode where you have to tell it how many CALs. It can cause problems. Per seat is always better. I don't believe there is a way to switch the server from per server to per seat.
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bowlerman25Author Commented:
when we get on the computer after a while. it says" an error occured while reconnecting f: to \\server1\public.  microsoft windows network: the local device name is already in use. the connection has not been restored.
When we try to open any of the mapped drives we get this?

this is in the system log-Your computer was not able to renew its address from the network (from the DHCP Server) for the Network Card with network address 0019DBE5A832.  The following error occurred:
The semaphore timeout period has expired. . Your computer will continue to try and obtain an address on its own from the network address (DHCP) server.

from applcation log i get these-Could not execute the following script \\haasenv.local\SysVol\haasenv.local\scripts\HAAS.bat. The network path was not found.
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Felicia KingCommented:
Perhaps the NIC is going to sleep. I have seen this on a lot of computers lately. Go into device managment, modify the power settings on the NIC to make sure that the OS cannot power it down.
I assume you have already checked the overall power settings in the power control panel to make sure that hibernate and sleep are not occurring at the OS level. I would also check for BIOS updates and NIC driver updates.

The semaphore timeout and the DHCP business sounds to me like the NIC on the PC is being powered down and then problems happen when it attempts to come back online.
Whenever I setup a PC anymore, I am disabling this NIC power management function because it just causes all kinds of administration headaches. Imagine trying to do remote maintenance and patching functions on your computers in off-hours. They are powered on, but their NICs are sleeping. It is frustrating. Hopefully that helps.
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bowlerman25Author Commented:
under the nic device, the power management for it is already off(unchecked).
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bowlerman25Author Commented:
all i want to know is since the server is set for per server instead of per seat.  that since they dont have enough cals is it getting enforced, not allowing all the computers to stay connected to their mapped drives?
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Felicia KingCommented:
What about driver update for the NIC?
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bowlerman25Author Commented:
i think i checked the nic for updates but i will again.  we plugged another different computer in the same spot as this one and it got disconnected, (different hardware).  so thats why im thinking its a license issue since it keeps popping up on the server?
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Felicia KingCommented:
Ah that is an interesting tidbit. Something is definitely forcing a termination of the connecton to the server. If it is happening to another computer on the same network cable, and the problem is very intermittent, it's probably not network hardware, but the licensing issue on the server.
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bowlerman25Author Commented:
thats what i am leaning towards.  funny thing is that its only been happening for a couple months, they said. other machines lose their connections to the server. i can ping the server by name and ip, on 2 different machines.  i can see the shares but cannot access them.  their are 13 machines including the server.  a picture below is of the license admin tool snapin. I am constantly getting a message about the licensing being not enough licenses.

So i went on another server i manage and that server has 5 cal's too but only had up to 8 max connections. never had a problem with that at this business.  any idea why?
license.JPG
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Felicia KingCommented:
If the server is telling you it's out of licenses, then it is perceiving that there are too many connections. That tells me you don't have another option other than to buy more of the correct type of CALs and install the license key. I'm sure you know, but there are two different type of CALs you can buy. This is a decent article on it.
http://blogs.msdn.com/b/mssmallbiz/archive/2007/09/12/device-cals-and-user-cals-what-s-the-deal.aspx
Technically, if the customer doesn't have enough CALs, they need them anyhow.
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bowlerman25Author Commented:
if it is in per server mode, can it refuse connections?
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Felicia KingCommented:
To me it's irrelevant because the server thinks it's out of licenses. Try stopping the licensing service and see if the problem goes away. I used to trick old servers this way. If the server thinks its connections are exceeding the number of simultaneous connections, it will drop them.
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bowlerman25Author Commented:
i did and set it to disabled, it became automatic somehow again and is on.  it might have been me turning it back on, dont remember. turning it off will not affect anything else?
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bowlerman25Author Commented:
they have exchange, does it matter if i turn off the license logging service? set to disabled?
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Felicia KingCommented:
I have only experienced problems if the server is a citrix server or an actual terminal server that is heavily reliant upon the licensing service connection. Never needed it on 2003 standard server that was not a terminal server for users. If it's a DC or a file server, no need for licensing service in my experience. Obviously, please test during a time when the users won't be affected.
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Felicia KingCommented:
I don't believe there is any negative impact to Exchange. You could test by disabling the licensing service and then try sending and receiving email. Also try connecting with some local outlook clients.
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bowlerman25Author Commented:
we are going to buy more cal's and try that.  ???
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bowlerman25Author Commented:
more cal's solved the problem
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bowlerman25Author Commented:
my answer was correct
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