CRM user authentication error

No not SQL; the CRM client doesn't connect directly to sql.
The fact that the user can connect through the Browser, indicates the server system is setup correctly.
My guess is that a different URL has been entered during the SfO installation... Verify that it is the same. The URL can be found in the regustry of the client PC (start->run->regedit.exe)
HKEY_CURRENT_USER\Software\Microsoft\MSCRMClient
Keys to check: ServerURL and Platformroot.
If the client connects through the browser with http://crm, and the SfO client connects with http://crm.mydomain.com, make sure crm.mydomain.com is added to the Trusted Sites or Intranet zone in Internet Explorer security settings.

Redwulmf, thanks for your answer.

I checked the settings:

Under HKCU I see the MSCRM folder, but there is almost nothing in it.
Under HKLM I see the MSCRM foklder with content.
The ServerURL = http://S002/MSCRMServices, but when I connect this url from my client machine, I get a 403 forbidden ...
I cannot see the Platformroot key.

CRM is running on port 80 instead of 5555. So I can connect via http://servername
Should I change that key to "http://S002/" ? what about the Platformroot key?

ow, my bad, I was looking at the server's registry.
If I look at the client registry, the url is
http://server:80/MSCRMServices

I changed it to http://server

Still the same error in outlook .... I can connect to the web client though ...

I compaired my colleague's registry with mine (where everything is working).
both keys are set to http://server/MSCRMServices on my pc, so i changed his registry keys with that url. still the same error ... :/
anything else I can check?

The Platformroot key *must* have /MSCRMServices at the end!
If the CRM site is running on port 5555, the ServerURL  and the Platformroot must be http://s002:5555/MSRCMServices,
and the WebAppUrl key (sorry I didn't mention this before) should be http://s002:5555.
As long as http://s002:5555 also works in the Browser.

it is set to http://server/MSCRMServices on the person's pc ... still no luck though.
He can connact via the url > http://server, but not via the ms outlook interface... .
It looks like it's using a different userid via the outlook interface??

Redwulf,

I think this is because we change the username in AD while he was already added to crm.

How can i delete this user from the crm userlist and re-add him?

Since you only change the Username nd all related objects will still be the same, you can change it directly in the Database without having to re-create the account: SystemUserBase table in the _MSCRM database.

Redwulf,

can't I just delete the user from the crm users and recreate in with the crm user manager?
I mean, do I really have to edit the databases? I don't want to do smth wrong in there ... .
I'd rather recreate the user, but how can i do this in crm?

Indeed, its safer to do it through the CRM application. However, you cannot delete a user; only disable (...and re-assign all the records the old user account owns to the new user account).

Hello Red,

Sorry for the late response, much work to do :)
I did change his email, but that didn't fix the user authentication problem :/
Do you have an idea how i could fix this user auth error in his outlook client?
webbased it works fine, that is the strange part
...

Ok, finally I was **** of it, I reinstalled the crm outlook client: problem fixed .... :)
phew ;)

thank you very much for all, the effort!!