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Mess: HTTP Error 401, 401.1 Unauthorized

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5 replies

by jorge valdes

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Hi:

I'm getting the message:

"401.1 Unauthorized: Logon Failed

This error indicates that the credentials passed to the server do not match the credentials required to log on to the server"

I'm supplying the correct information (user and pass).
The site is up and running
My IE version is 5.50 Spanish
I'm using dial up connection

We have tried to access from several machines located in different places and sometimes it works and some others I simply can't login to the site.
Does anybody have a clue about how this problem could be solved?

5 replies

by al_<al

It sounds to me like a server problem and not anything you could change on the browser. My best guess is that the domain is clustered with more than one server answering requests (this would explain why it works sometimes and not others). One or more of the members of the cluster must have authentication set improperly.

Another possible cause could be if the server is set to use integrated Windows authentication but has lost communications with the PDC or BDC. A server restart usually clears this up.

The one possible area to look into on the browser (client) end is to make sure there are no saved passwords. To do this, open Internet Options click on -->Content-->AutoComplete-->Clear Passwords

Try the site again.

Hope this at least frames the problem.

by obededom

You don't give a lot of background info but I am assuming from the error that you are using IIS as your Web server. Sometimes NT requires that you put in the domain name first and then the user name when it is asking for authentication. For example:
Username: domain_name/username
Password: ********

This might solve your problem.

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