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COMADMIN_E_ROLEEXISTS
COM+ identity, role, and administration security: exact meaning of COMADMIN_E_ROLEEXISTS
A role with the requested identity already exists in the application. Role creation reaches the application security collection and finds a duplicate name or key.
Windows describes this condition as “The role already exists”.
Where the result occurs
This result concerns a concrete COM+ identity, role, credential, or call-authentication contract; successful interactive access does not prove that the COMAdmin or application identity can perform the operation. In the specific case of it, enumerate the application Roles collection and compare normalized names, identifiers, and intended membership.
Evidence to collect before repair
- Evidence should include target AppID, role key, exact role name, and normalized name, captured before a repair changes state.
- Collect the existing role membership and description when diagnosing this result; without it the symbolic HRESULT is underdetermined.
- Record package installation log and post-install administration log.
- Preserve the operation that attempted Add or SaveChanges; it anchors the failure to the real administration object.
Diagnostic sequence
- populate the Roles collection for the exact AppID.
- The next diagnostic action is to compare the requested role with the existing role by key and normalized name.
- To isolate this result, decide whether the existing role represents the same authorization policy.
- update membership on the existing role or choose a genuinely distinct name.
- repopulate roles and verify component/interface/method assignments.
Difference from nearby COMADMIN results
COMADMIN_E_ROLE_DOES_NOT_EXIST reports a dangling role assignment rather than duplicate role creation.
Retry and recovery
Reuse and update the existing role when it represents the same policy, or choose a genuinely distinct role identity.
Practical administration scenario
Deployment tries to create the Readers role on every run instead of checking the existing application role first.
Official Microsoft references
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