Due to an unexpected service incident, you may have experienced delayed report generation in Crossref Similarity Check V2, iThenticate V2, Turnitin Similarity, SimCheck, Originality and Authorship today. We are pleased to advise that service has been restored.
The incident occurred between the following times:
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, iThenticate V2, Turnitin Similarity, SimCheck, Originality and Authorship 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).