Topic Last Modified: 2014-02-07

The Diagnostic Report provides diagnostic and troubleshooting information for a failed session. This information includes both the Diagnostic ID and the Diagnostic header that were reported when the session failed. The Diagnostic ID is a unique identifier (in the form of an ms-diagnostics header) that gets attached to a SIP message, while the Diagnostic header provides an accompanying description for the Diagnostic ID. The report might also contain valuable troubleshooting details that are known by the reporting component. For example:

Accessing the Diagnostic Report

The Diagnostic Report can be accessed by clicking the Diagnostic Report (Detail) metric on either the Peer-to-Peer Session Detail Report or the Conference Detail Report.


None. You cannot filter the Diagnostic Report.


The following table lists the information provided in the Diagnostic Report for each session.

Diagnostic Report Metrics

Name Can you sort on this item? Description

Report time


Date and time that the report was recorded.

Response code


SIP response code sent when the session failed.

Request type


SIP request type that failed. For example, INVITE, BYE, or SERVICE.



Source of the error.

From user URI


SIP address of the user who initiated the session.

From user agent


Software used by the endpoint of the user who initiated the session.

Diagnostic ID


Unique identifier (in the form of an ms-diagnostics header) attached to a SIP message that often provides information useful in troubleshooting errors.

Content type


Type of media content that failed. For example, a common content type is Application/sdp. Session Description Protocol (SDP) is a standard Internet protocol used for session announcements, session invitations, and other forms of multimedia session initiation.



Application involved in the error.

To user URI


SIP address of the user who was invited to the session.

Conference join times (ms)


Amount of time (in milliseconds) it took for the user to join the conference.

Diagnostic header


Diagnostic ID description.

A list of diagnostic errors can be found on the Ms-Diagnostics Header page.