Shared drives "disconnecting"

[jimbob1120]

I have noticed that at the server I see a red "X" under the ICON for each of the shared drives when I click on Windows Explore. If I highlight the drive the x goes away in a few seconds, but re-appears all day long. It has never posed a problem until recently.

After a power failure to the building last week, the same thing happens, but now individual workstations get an error message when they try to access one of the shared drives.
The server has been rebooted twice since then.

The Autodisconnect feature appears to be set right according to the various articles available from Microsoft.

Any suggestions would greatly appreciated.

 

[quosimodo]

I've been having similar problems, but only with one specific computer where I would get the error message. Did you change your auto disconnect time? I changed mine to allow it to connect all day and it seems to work better now.

 

[GetseKlets]

If you have a Compaq Server:

http://support.microsoft.com/default.aspx?scid=kb;en-us;305355

If you don't have a Compaq Server then this one will probably do it for you:

http://support.microsoft.com/default.aspx?scid=kb;en-us;297684

Above URL contents copied:

Mapped Drive Connection to Network Share May Be Lost
The information in this article applies to:
Microsoft Windows Server 2003, Standard Edition
Microsoft Windows Server 2003, Enterprise Edition
Microsoft Windows 2000 Server
Microsoft Windows 2000 Professional

This article was previously published under Q297684
SYMPTOMS
On a computer that runs one of the versions of Windows that is listed at the beginning of this article, if you map a drive to a network share, the mapped drive may be disconnected after a regular interval of inactivity, and Windows Explorer may display a red "X" on the icon of the mapped drive. However, if you try to access or browse the mapped drive, it reconnects quickly. This behavior occurs if the network share computer runs Microsoft Windows NT 4.0, Windows 2000, or Windows Server 2003.
CAUSE
This behavior occurs because Windows NT Server 4.0, Windows 2000 Server, and Windows Server 2003 can drop idle connections after a specified time-out period (by default, 15 minutes) to prevent wasting server resources on unused sessions. The connection can be re-established very quickly, if required.
RESOLUTION
To resolve this behavior, change the default time-out period on the shared network computer. To do this, use one of the following methods.

NOTE: You cannot change the default time-out period for Microsoft Windows 95-based computers and Microsoft Windows 98-based computers that have shared resources.
Registry Editor
NOTE: You cannot use this method to turn off the autodisconnect feature of the Server service. You can only use this method to change the default time-out period for the autodisconnect feature. WARNING: If you use Registry Editor incorrectly, you may cause serious problems that may require you to reinstall your operating system. Microsoft cannot guarantee that you can solve problems that result from using Registry Editor incorrectly. Use Registry Editor at your own risk.

Use Registry Editor to increase the default time-out period. To do this, follow these steps, and then quit Registry Editor:
Click Start, click Run, type regedit (Windows 2000 or Windows Server 2003) or type regedt32 (Windows NT 4.0), and then click OK.
Locate and then click the following key in the registry:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\lanmanserver\parameters

In the right pane, click the autodisconnect value, and then on the Edit menu, click Modify. If the autodisconnect value does not exist, follow these steps:
On the Edit menu, point to New, and then click REG_DWORD.
Type autodisconnect, and then press ENTER.
Click Hexadecimal.
In the Value data box, type ffffffff, and then click OK.
Command Line
NOTE: If you use this method, you may turn off the autotuning feature for the Server service.

To change the default time-out period for the autodisconnect feature of the Server service, open a command prompt, type the following line, and then press ENTER
net config server /autodisconnect:number

where number is the number of minutes that you want the server to wait before it disconnects a mapped network drive. The maximum value for this command is 65,535.

NOTE: If you set the autodisconnect value to 0 (zero), the autodisconnect feature is not turned off, and the Server service disconnects mapped network drives after only a few seconds of idle time.

To turn off the autodisconnect feature, open a command prompt, type the following line, and then press ENTER:
net config server /autodisconnect:-1