When Dynamics CRM is setup in IFD (Internet Facing Deployment) authentication mode I get error: "The request failed with HTTP status 401: Unauthorized. (System.Web.Services)".

You have to make two changes:

Enable Anonymous Authentication on MSCRMServices\2007\SPLA on every web front in your CRM farm.
In COZYROC Dynamics CRM Connection Manager select deployment type Hosted.

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When Dynamics CRM is setup in IFD (Internet Facing Deployment) authentication mode I get error: "The request failed with HTTP status 401: Unauthorized. (System.Web.Services)".

When Dynamics CRM is setup in IFD (Internet Facing Deployment) authentication mode I get error: "The request failed with HTTP status 401: Unauthorized. (System.Web.Services)".

Related Articles

Error Message: The underlying connection was closed: An unexpected error occurred on a send. (System.Web.Services)

When Dynamics CRM is setup with Ping Identity authentication system I get error: "An error occurred when verifying security for the message".

Can I use Modern Authentication with the Dynamics CRM Adapters?

Error Message: AADSTS50076: Due to a configuration change made by your administrator, or because you moved to a new location, you must use multi-factor authentication to access

When I try to select entity in Dynamics CRM Source component I get error: "No connection could be made because the target machine actively refused it". Dynamics CRM Connection Manager 'Test Connection' command works fine.