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Dell Wyse Windows XPE - Write Filter and Secure Channel Passwords


Problem faced when NTE/XPE terminals join a domain

Microsoft Domain Servers use a discrete secure channel to communicate to all Domain members. The Domain Controller resets this password every 30 days for XP and W2K (7days for NT4). If you have Write Filter enabled, this change in password would be lost on the Winterm. Hence you will face problems logging on to the domain after 30 days.


There are two possible solutions for this issue

  1. Disable Write Filter. This is the preferred method as it increases the ease of use for a Domain enabled unit. There is no way to work around Write Filter to allow the recording of the secure channel password on the local media.
    Refer to Write Filter - Security Channel Pwd
  2. Extend the duration of the password from the default period (30 days for XPe and 7 days for NTe) to 1,000,000 days, which effectively means the password will never change over the life of the unit. You can use the following Registry values to implement this solution:
    • Key = HKLM\SYSTEM\CurrentControlSet\Services\NetLogon\Parameters
    • Value = MaximumPasswordAge REG_DWORD
    • Default = 7 (entered in decimal)
    • Range = 1 to 1,000,000 (in days)
  3. Related information on Effects of machine account replication on a domain

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Identyfikator artykułu: SLN290645

Data ostatniej modyfikacji: 12/16/2015 08:21 AM


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