Hello ,
Try this:
Boot to Safe Mode. ( just Safe Mode not Safe Mode with networking)
Log on as Administrator. ( This has to be the local administrator account)
Enable the administrator account(it's disabled by default but you can still
log on in Safe Mode), you may have to set a password first.
Then log back on normally with that administrator account.
Thanks,
Darrell Gorter[MSFT]
This posting is provided "AS IS" with no warranties, and confers no rights
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<Thread-Topic: Windows Activation
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<Subject: Windows Activation
<Date: Tue, 8 Aug 2006 02:17:08 -0700
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<Finally, after recovering Windows Vista from a reinstallation of W2k3 in
<other partition, I log in but it appears a message that I have to activate
<Windows. I have chosen the Re-type serial number and the automated phone
<system but I get the message "Authentication Failed" with the following
error
<0x800705B4 and does not allow me to continue working.
<Does anybody know what this means and how to solve it? I downloaded this
<version from the official Microsoft Center
<