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hrInvalidSesid
Locate the failure in the Jet call chain
hrInvalidSesid means the JET_SESID is stale, foreign to the instance, or otherwise invalid.
This is the legacy Directory Service backup/restore HRESULT form of JET_errInvalidSesid (0xC8000450).
The key comparison is: hrInvalidDatabaseId and hrInvalidTableId target child handles; this code invalidates the session root. The first useful observation is to trace session creation, end, instance identity, thread transfer, and use after error cleanup. This evidence shows whether the failure is nesting, ownership, cursor-local conflict, cross-session contention, or changed row state.
The ESE objects in play
| Diagnostic layer | JET_SESID transaction depth, row versions, and write ownership |
|---|---|
| Typical API surface | JetBeginSession, JetBeginTransaction, JetCommitTransaction, JetRollback, and update APIs |
| Code-specific condition | the JET_SESID is stale, foreign to the instance, or otherwise invalid |
| First corrective direction | discard all handles derived from the bad session and create a new session under the live instance |
Retries must re-read application preconditions because the visible row may have changed. Each begin must be matched by commit or rollback on the same session.
Questions the logs must answer
- Code-specific observation: trace session creation, end, instance identity, thread transfer, and use after error cleanup.
- the row version and business preconditions observed before the write; associate it with this result rather than with a later generic exception.
- every begin, commit, and rollback for the exact JET_SESID.
- transaction depth, thread owner, cursor handles, and target bookmark or key.
Response and verification
- Freeze the failing request context and record
0xC8000450, the Jet API name, and the current instance/session ownership. - Verify the code-specific precondition: trace session creation, end, instance identity, thread transfer, and use after error cleanup.
- Apply the targeted fix: discard all handles derived from the bad session and create a new session under the live instance.
- Before retrying the operation, reconcile transaction depth, lock release, row version, and application-level idempotency.
Distinguishing signals
hrInTransaction | an operation that requires transaction level zero was invoked while the session has an active transaction |
|---|---|
hrNotInTransaction | the operation requires a transaction but the supplied session has no active save point |
hrerrDataHasChanged | optimistic cursor state no longer matches the row version expected by the operation |
Actions that can hide or worsen the problem
- Do not blindly retry a non-idempotent update after a conflict.
- Do not share a session with an open transaction across unrelated threads or requests.
Technical references
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