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Microsoft Dynamics 365 | Integration, Dataverse...
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Unable to Login to Dynamics CRMOrganizationWebProxyClient is null

Posted on by 5

Hello, I am unable to get a CrmServiceClient from my connectionStrings. I need to use an AuthType OAuth to connect to my CRM instance (Online).

Unfortunately i get this error in my debugger : 

Name Value Type
LastCrmError "Unable to Login to Dynamics CRMOrganizationWebProxyClient is null" string

pastedimage1672061546469v2.png

I always have the same error message, here are my different tests with different connectionStrings :

1)  Test with microsoft AppID and RedirectURL :
<add name="ConnectionString"
connectionString="
AuthType=OAuth;
Username=XXX@XXX.fr;
Password=fakePW;
Url=XXXXXX.crm4.dynamics.com;
AppId=51f81489-12ee-4a9e-aaae-a2591f45987d;
RedirectUri=app://58145B91-0C36-4500-8554-080854F2AC97;
Integrated Security=true;
TokenCacheStorePath=c:\MyTokenCache\msal_cache.data;
LoginPrompt=Auto"/>

2) Test with my org :
<add name="ConnectionString"
connectionString="AuthType=OAuth;
Username=XXX@XXX.fr;
Password=fakePW;
Url=XXXXXX.crm4.dynamics.com/;
AppId=XXXXXXXXXXXX;
RedirectUri=login.microsoftonline.com/.../authorize;
LoginPrompt=Auto"/>

3) multiple others

I have some doubts about my redirect URL. The redirect URL I use in my 2nd test is the URL given to me in the AzureAD App. I see it uses Oauth2, maybe something there ?
Or do you see what I might be doing wrong ? How can I test with valid informations ? From microsoft for example.

  • Suggested answer
    Bipin D365 Profile Picture
    Bipin D365 28,964 Super User 2024 Season 1 on at
    RE: Unable to Login to Dynamics CRMOrganizationWebProxyClient is null

    Hi,

    Make sure you have the latest nuget update ...

    Please see my console application and app.config which works on my instance.

    github.com/.../UserBUChangeUtility

  • Suggested answer
    Leco Lv Profile Picture
    Leco Lv on at

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