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Drive mapping problems to DFS shares

By joshhansen ·
over the past couple days, we've seen XP sp2 workstations having periodic drive mapping problems. Drive mappings are made to dfs shares at logon. during the day, these mappings suddenly become unavailable. the drive letter is still there but when opening the drive, an error appears saying it is unavailable. Rebooting, unmapping and remapping or doing a "check status" of the dfs link restores access. the only change is that the servers hosting the dfs shares (w2k3 sp1) were rebooted after installing some MS patches.

Does anyone know of a registry or gpo setting that a ms patch may have changed regarding this or a way to set a setting to increase the frequency where the client will refresh or check status of connections to dfs shares.

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by robo_dev In reply to Drive mapping problems to ...

A quotation from the book of Microsoft "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. (see link below)"

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

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