401 - Error

Posted on 2016-10-14
Last Modified: 2016-10-19
I am getting the following error all of a sudden for a web page that is configured with an API for SOAP calls:

401 - Unauthorized: Access is denied due to invalid credentials.

You do not have permission to view this directory or page using the credentials that you supplied.

Has anyone experienced this issue?
Question by:amazon4life
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LVL 11

Expert Comment

ID: 41844004
A hundred times.  Need more details though.  Is it supposed to be anonymous?  Are there supposed to be creds?  Is the free to the world, or intranet?

Author Comment

ID: 41844068
Not supposed to be anonymous, and yes there are IIS credentials via a domain account and an API account, generating SOAP calls within the web.config.  Not on the internet, only intranet.  I need to verify TLS is not on 1.0 but on 1.1 or higher.  Have you done this before?
LVL 11

Accepted Solution

loftyworm earned 500 total points
ID: 41844075
You may find some more enlightening logs here

Also, have you checked the standard stuff?  the account is not locked out or expired password.  The certificates AND path are correct and working?
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LVL 11

Expert Comment

ID: 41844076
You can find the TLS information in the certificate details

Author Comment

ID: 41844079
Thanks, I'll check the link.  Yes, I checked the standard stuff, testing authentication via IIS successfully, even tried granting Authenticated Users access via Security Group tab, account is active and the password has not expired.
LVL 11

Expert Comment

ID: 41844085
There may be something in the Security event log as well, as to what account is failing.  

I have also seen creds connected to the application pools, may need to look there.

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