Turnitin Service Incident - 18th December 2025

Incident Report for Turnitin

Resolved

We’ve fixed it!

Due to an unexpected service incident, you may have experienced delayed report generation in Crossref Similarity Check V2 and Turnitin Similarity/SimCheck today. We are pleased to advise that service has been restored.

The incident occurred between the following times:

PST: Tuesday, 18th 00:53 - Tuesday, 18th 03:02
GMT: Tuesday, 18th 08:53 - Tuesday, 18th 11:02
AEDT: Tuesday, 18th 19:53 - Tuesday, 18th 22:02

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

Posted Dec 18, 2025 - 03:07 PST

Identified

We’ve run into some issues.

Crossref Similarity Check V2 and Turnitin Similarity/SimCheck are currently experiencing an unexpected service incident.

During this time, you may find that submissions are slow to generate Similarity reports.

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

Posted Dec 18, 2025 - 02:40 PST

This incident affected: iThenticate 2.0 (iThenticate Report Processing Time, Similarity Report Generation), Americas (US environment) (Report Processing Time), Europe (EU environment) (Report Processing Time), Asia Pacific (Asia Pacific environment) (Report Processing Time), and Crossref Similarity Check ((v2) Paper Submissions Processing, (v2) Similarity Reports Generation).