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When Windows is unable to contact a domain controller during a users login a popup error message may be displayed, this message can be controlled by modifying this setting.

To control the following message:

A domain controller for your domain could not be contacted. You have been logged on using cached account information. Changes made to your profile since you last logged on may not be available.

Per User Parameter

Open your registry and find the key below.

Create a new DWORD value, or modify the existing value, named 'ReportDC' and set it to equal '0' to suppress the message.

System-Wide Parameter

On Windows 2000 and above this message is supressed by default, to modify it open your registry and find the key:

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft \Windows NT\CurrentVersion\Winlogon]

Create a new string value called "ReportControllerMissing" and set it to "TRUE" to report errors, or "FALSE" to suppress errors.

Restart Windows for the change to take effect.

		(Default)	REG_SZ	(value not set)
		ReportDC	REG_DWORD	0x00000001 (1)
		ReportControllerMissing	REG_SZ	TRUE

	HKEY_CURRENT_USER\Software\Microsoft\Windows NT\CurrentVersion\Winlogon

Disclaimer: Modifying the registry can cause serious problems that may require you to reinstall your operating system. We cannot guarantee that problems resulting from modifications to the registry can be solved. Use the information provided at your own risk.