Outage in Turnitin

Turnitin Service Incident - 11th December 2025

Resolved Major

December 11, 2025 - Started 2 months ago - Lasted 28 minutes
Official incident page

Incident Report

We’ve run into some issues. Turnitin Similarity, SimCheck, Originality, Authorship, iThenticate V2, Crossref Similarity Check in Europe are currently experiencing an unexpected service incident, users accessing these services via an integration may also be affected. During this time, you may find that users are unable to log in or access this service. We invite you to track the progress of this incident while we work to bring the service back to optimum health.

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Latest Updates ( sorted recent to last )

RESOLVED 2 months ago - at 12/11/2025 04:58PM

We’ve fixed it!

Due to an unexpected service incident, users accessing the services via the following products: Turnitin Similarity, SimCheck, Originality, Authorship, iThenticate V2, Crossref Similarity Check in Europe may have experienced difficulties logging in to their account. Users accessing these services via an integration may also have been affected.

We are pleased to advise that service has been restored.

The incident occurred between the following times:

PST: Thursday, 11 December 05:00–08:37
GMT: Thursday, 11 December 13:00–16:37
AEDT: Friday, 12 December 00:00–03:37

We regret any inconvenience this may have caused if you were impacted by today’s incident.

INVESTIGATING 2 months ago - at 12/11/2025 04:31PM

We’ve run into some issues.

Turnitin Similarity, SimCheck, Originality, Authorship, iThenticate V2, Crossref Similarity Check in Europe are currently experiencing an unexpected service incident, users accessing these services via an integration may also be affected.

During this time, you may find that users are unable to log in or access this service.

We invite you to track the progress of this incident while we work to bring the service back to optimum health.

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