EventReporter Event ID 901: Blocked license key rejected#

Answer#

The product service does not start with the blocked key.

Event details#

Event ID: 901
Severity: Error
Component: Licensing
Windows Event Log source: Adiscon EvntSLog
Available since: Current supported versions; original introduction not recorded
Message pattern: The product rejected a blocked license key during startup. Additional detail: {event_detail}

Possible causes#

The installed key is on the product’s blocked-key list and cannot authorize startup.
License material intended for a different or superseded installation is still configured.

Immediate checks#

Do not modify or repeatedly re-enter the blocked key.
Confirm the exact product and version, then obtain and install authorized replacement license material.
Start the service once and verify the reported license mode.

Detailed procedures#

Verify product license and feature entitlement state — Confirm product, version, validity, edition, and required feature without exposing license data.
Collect an Event ID and neighboring product events — Preserve the complete event and the product events immediately before and after it.
Export configuration and collect a bounded debug log — Create a text configuration export and time-bounded debug capture, then disable debugging.

Verify the result#

Confirm that the service reaches Running, reports the intended licensed mode, and does not emit Event ID 901 during startup.

Evidence to collect#

The complete Windows Application Event Log entry, including all event detail.
The product name, exact version, service account, and event timestamp with time zone.
A configuration export and debug log covering the same time window, with secrets removed.

Escalation#

If the event continues after the detailed procedures, collect the listed evidence and contact Adiscon Support.