Troubleshooting: Microsoft SharePoint (On-Premises)

The Trusted Identity Provider section is grayed out on the Edit Authentication page

Make sure Claims Based Authentication is selected as the preferred mode of authentication for this SharePoint application. From the Windows PowerShell command prompt, enter the following to set the speciﬁed user account as an administrator for the site:

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$WebAppName = "http://" (http://)"
$wa = get-SPWebApplication $WebAppName
$wa.UseClaimsAuthentication = $true
$wa.Update()

Authentication fails and shows a web page with an error: "An application error occurred on the server. The current custom error settings for this application prevent the details of the application error from being viewed"

Open the web.conﬁg ﬁle for this web application and make sure custom errors are turned oﬀ in the web.conﬁg ﬁle.

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<system.web>
...
<customErrors mode="Off"/>

Authentication fails showing a web page with an error: "The Audience URI could not be validated"

Open the web.conﬁg ﬁle for this web application and add the following line:

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(mode=Never) 
<microsoft.identityModel>
....
<audienceUris mode="Never"/>

I see both Windows Authentication and Okta for SSO when I try to sign in

Both Windows Authentication and Okta are chosen as Identity Trust provider. Uncheck Windows Authentication if you want only Okta to act as a trust provider.

I changed authentication providers but there is no eﬀect

Refer to http://technet.microsoft.com/en-us/library/cc288091(v=oﬃce.12).aspx. Resetting your IIS server (iisreset) should usually help.

I get stuck in an infinite loop when signing in to Sharepoint 2019.

Patch the Sharepoint 2019 server as documented on KB 4484259 and ensure that you are using the https:// prefix for all Sharepoint sites.