Power Platform Community Forum Thread Details

Local sign in error

Hello,

I've been having an issue trying to create local logins. My client wants full control regarding its users. Users that want to acces their site must get approved by the admin. Currently using a plugin for this and everything works (getting the application, approving it and creating a contact with login credentials.) however when the user tries to log in it gives me following error: Error-id # [04bb124d-8e75-4d63-b029-83ceb38d3207] Value cannot be null. Parameter name: value
This is about the claims mapping. I can't seem to find which data is necessary. Hope someone can help, thanks in advance

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General

The error means something important is missing when the user tries to log in using local authentication. most likely the contact record is missing required values or claim mappings are not set up properly.
steps to fix the issue:

open the contact record created by the plugin
check these fields are filled:
1. emailaddress1 (this must match login email)
2. adx_username (used if login is by username)
3. adx_loginenabled = true
4. adx_approved = true
5. adx_identity_provider = leave it empty or set to:
  "https://login.microsoftonline.com" (for local login it can be null)
go to power pages management app
open "site settings"
search for a setting with name:
Authentication/Registration/ClaimsMapping
if not there, create it
paste this value into the setting (use correct capitalization):

[
{
    "LoginProvider": "LocalLogin",
    "Claims": [
      {
        "ContactField": "emailaddress1",
        "ClaimType": "http://schemas.xmlsoap.org/ws/2005/05/identity/claims/emailaddress",
        "IsPrimary": true
      },
      {
        "ContactField": "adx_username",
        "ClaimType": "http://schemas.xmlsoap.org/ws/2005/05/identity/claims/name"
      }
    ]
}
]

check another setting:
name = Authentication/Registration/LoginButtonAuthenticationType
value should include: LocalLogin
save everything and try login again

if still fails, turn on portal diagnostics logging to see exact missing value

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