Mapped Drive Connection to Network Share May Be Lost

Various changes to the Windows Operating System, also for the Intranet

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sjj1805
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Mapped Drive Connection to Network Share May Be Lost

Post by sjj1805 » Thu Jan 22, 2009 1:02 pm

Mapped Drive Connection to Network Share May Be Lost

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.

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.

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.
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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:

1. Click Start, click Run, type regedit (Windows 2000 or Windows Server 2003) or type regedt32 (Windows NT 4.0), and then click OK.
2. Locate and then click the following key in the registry:
HKEY_LOCAL_MACHINE\\SYSTEM\\CurrentControlSet\\Services\\lanmanserver\\parameters

NOTE: The client side session is automatically disconnected when the idling time lasts more than the duration that is set in KeepConn. For this reason, the session is disconnected according to the less set duration value between AutoDisConnect and KeepConn. To modify the timeout duration in the client side during a UNC connection, specify the arbitrary time in KeepConn from registry value.
Locate and then click the following key in the registry:
HKEY_LOCAL_MACHINE\\SYSTEM\\CurrentControlSet\\Service\\lanmanworkstation\\parameters
Value: KeepConn
Data type : REG_DWORD
Range : 1 to 65535 (sec)
Default value: 600 sec = 10 mins
3. 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:
1. On the Edit menu, point to New, and then click REG_DWORD.
2. Type autodisconnect, and then press ENTER.
4. On the Edit menu, click Modify.
5. Click Hexadecimal.
6. In the Value data box, type ffffffff, and then click OK.

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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

User avatar
sjj1805
Site Admin
Posts: 1194
Joined: Fri Oct 27, 2006 12:45 am
operating_system: Windows 10 Pro
motherboard: Hewlett Packard 2AF7
system_drive: C
32bit or 64bit: 64 Bit
processor: 2-90 gigahertz Intel Core i5 4460S
ram: 8 GB
video card: NVIDIA GeForce GT 705
sound card: P40D100-4 NVIDIA High Definition Audio
Hard_Drive_Capacity: 8 TB
Location: Birmingham UK
Contact:

Post by sjj1805 » Thu Jan 22, 2009 1:19 pm


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