Turnitin Outage History

Started Oct 14, 2025, 08:15 AM UTC· resolved Oct 14, 2025, 04:15 PM UTC

1. resolved Oct 14, 2025, 05:42 PM UTC

   We’ve fixed it! Due to an unexpected service incident, users of the following products: - Turnitin and Turnitin UK (via the website and integrations) - Similarity, Originality, SimCheck and Gradescope (via integrations only) Might have experienced difficulties accessing the service, accessing accounts, launching assignments, grade passback, and roster syncing. We are pleased to advise that service has been restored. The incident occurred between the following times: PDT: Tuesday 14th, 09:15 - Tuesday 14th, 10:15 BST: Tuesday 14th, 17:15 - Tuesday 14th, 18:15 AEDT: Wednesday 15th, 02:15 - Wednesday 15th, 03:15 We regret any inconvenience this may have caused if you were impacted by today’s incident.

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Started Aug 25, 2025, 12:25 PM UTC· resolved Aug 25, 2025, 09:55 PM UTC

1. resolved Aug 26, 2025, 08:22 AM UTC

   We’ve fixed it! Due to an unexpected service incident, users of Turnitin Similarity, SimCheck, Originality, Authorship, Crossref Similarity Check and iThenticate V2 in the Americas (US environment), may have been unable to launch into the service. We are pleased to advise that service has been restored. The incident occurred between the following times: PDT: August 25, 13:25 - August 25, 14:55 BST: August 25, 21:25 - August 25, 22:55 AEST: August 26, 06:25 - August 26, 07:55 We regret any inconvenience this may have caused if you were impacted by today’s incident.

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Started Jul 31, 2025, 05:55 AM UTC· resolved Jul 31, 2025, 06:41 AM UTC

1. identified Jul 31, 2025, 05:55 AM UTC

   We’ve run into some issues. Turnitin.com is currently experiencing an unexpected service incident. During this time, you may find that users are unable to sign in. We invite you to track the progress of this incident while we work to bring the service back to optimum health.

2. resolved Jul 31, 2025, 06:41 AM UTC

   We’ve fixed it! Due to an unexpected service incident, you may have been unable to sign in at www.turnitin.com today. We are pleased to advise that service has been restored. The incident occurred between the following times: PDT: July 30, 22:15 – July 30, 23:25 BST: July 31, 06:15 – July 31, 07:25 AEST: July 31, 15:15 – July 31, 16:25 We regret any inconvenience this may have caused if you were impacted by today’s incident.

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Started Jul 28, 2025, 07:36 AM UTC· resolved Jul 28, 2025, 08:54 AM UTC

1. investigating Jul 28, 2025, 07:36 AM UTC

   We’ve run into some issues. Turnitin.com is currently experiencing an unexpected service incident. During this time, you may find that users are unable to sign in. We invite you to track the progress of this incident while we work to bring the service back to optimum health.

2. resolved Jul 28, 2025, 08:54 AM UTC

   We’ve fixed it! Due to an unexpected service incident, you may have been unable to sign in at www.turnitin.com today. We are pleased to advise that service has been restored. The incident occurred between the following times: PDT: July 27, 23:55 – July 28, 01:32 BST: July 28, 07:55 – July 28, 09:32 AEST: July 28, 16:55 – July 28, 18:32 We regret any inconvenience this may have caused if you were impacted by today’s incident.

Read the full incident report →

Started Jun 03, 2025, 12:47 AM UTC· resolved Jun 03, 2025, 01:31 AM UTC

1. investigating Jun 03, 2025, 12:47 AM UTC

   We’ve run into some issues. Turnitin is currently experiencing an unexpected service incident. During this time, users of Turnitin, Turnitin UK, iThenticate V1, Crossref and users who access these services via an integration may experience difficulties accessing the service. We invite you to track the progress of this incident while we work to bring the service back to optimum health.

2. identified Jun 03, 2025, 12:59 AM UTC

   The issue has been identified and a fix is being implemented.

3. resolved Jun 03, 2025, 01:31 AM UTC

   We’ve fixed it! Due to an unexpected service incident, users of Turnitin, Turnitin UK, iThenticate V1, Crossref and users who access these services via an integration might have experienced difficulties accessing the service. We’re pleased to confirm that the issue has now been resolved. The incident occurred between the following times: PDT: June 2nd, 17:00 - June 2nd, 18:21 BST: June 3rd, 01:00 - June 3rd, 02:21 AEST: June 3rd, 10:00 - June 3rd, 11:21 We regret any inconvenience this may have caused if you were impacted by today’s incident.

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Started May 29, 2025, 07:38 AM UTC· resolved May 29, 2025, 03:54 PM UTC

1. resolved May 29, 2025, 09:55 PM UTC

   We’ve fixed it! Due to an unexpected service incident, users of SimCheck, Similarity, Originality, Crossref Similarity Check, and iThenticate V2, in Europe and the Asia-Pacific region may have experienced delays in the generation of Similarity Reports. Users, accessing these services via an integration, may also have been affected. We’re pleased to confirm that the issue has now been resolved. The incident occurred between the following times: PDT: May 29, 08:38 – 08:54 BST: May 29, 16:38 – 16:54 AEST: May 30, 01:38 – 01:54 We regret any inconvenience this may have caused if you were impacted by today’s incident.

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Started May 21, 2025, 12:08 PM UTC· resolved May 21, 2025, 01:19 PM UTC

1. identified May 21, 2025, 12:08 PM UTC

   We’ve run into some issues. Simcheck, Similarity, Originality, Crossref Similarity Check, and iThenticate V2 is currently experiencing an unexpected service incident. During this time, you may find that you encounter slowness or error messages accessing these products. We invite you to track the progress of this incident while we work to bring the service back to optimum health.

2. resolved May 21, 2025, 01:19 PM UTC

   We’ve fixed it! Due to an unexpected service incident, users in Europe may have encountered slowness or error messages within SimCheck, Similarity, Originality, Crossref Similarity Check, and iThenticate V2 today. We are pleased to advise that service has been restored. The incident occurred between the following times: PDT: May 21st, 02:00 - May 21st, 05:35 BST: May 21st, 10:00 - May 21st, 13:35 AEST: May 21st, 19:00 - May 21st, 22:35 We regret any inconvenience this may have caused if you were impacted by today’s incident.

Read the full incident report →

Started May 02, 2025, 02:30 AM UTC· resolved May 02, 2025, 11:30 AM UTC

1. resolved May 02, 2025, 12:41 PM UTC

   We’ve fixed it! Due to an unexpected service incident, users of Turnitin, Turnitin UK, Similarity, Originality, SimCheck, Authorship, iThenticate, Crossref, and iThenticate V2 — including those accessing these services via integrations, may have experienced delays in Similarity Report generation, slowness when accessing these services, logging in and uploading submissions. We are pleased to advise that service has been restored. The incident occurred between the following times: PDT: May 2nd, 03:30 - May 2nd, 04:30 BST: May 2nd, 11:30 - May 2nd, 12:30 AEST: May 2nd, 20:30 - May 2nd, 21:30 We regret any inconvenience this may have caused if you were impacted by today’s incident.

Read the full incident report →

Started Apr 14, 2025, 08:30 AM UTC· resolved Apr 14, 2025, 10:07 AM UTC

1. monitoring Apr 14, 2025, 08:30 AM UTC

   Due to an unexpected service incident, users of Turnitin, Turnitin UK, Similarity, Originality, SimCheck, Authorship, iThenticate, Crossref, and iThenticate V2 — including those accessing these services via integrations — may experience delays in Similarity Report generation. We appreciate your patience and invite you to track the progress of this incident as we work to restore full functionality.

2. resolved Apr 14, 2025, 10:07 AM UTC

   We’ve fixed it! Due to an unexpected service incident, users of Turnitin, Turnitin UK, Similarity, Originality, SimCheck, Authorship, iThenticate, Crossref, and iThenticate V2 — including those accessing these services via integrations, may have experienced delays in Similarity Report generation. The incident occurred between the following times: PDT: 23.20 April 13th, - April 14th, 02.45 BST: April 14th, 07:20 - April 14th, 10:45 AEST: April 14th, 16.20 - April 14th, 19.45 We regret any inconvenience this may have caused if you were impacted by today’s incident.

Read the full incident report →

Started Dec 12, 2024, 04:14 PM UTC· resolved Dec 12, 2024, 05:18 PM UTC

1. investigating Dec 12, 2024, 04:14 PM UTC

   We’ve run into some issues. SimCheck, Similarity, Originality, iThenticate 2.0, Crossref Similarity Check, and those accessing these services through integrations including Single-Sign-On in the Asia Pacific region only, are currently experiencing an unexpected service incident. During this time, users may encounter problems accessing these services, logging in and uploading files. We invite you to track the progress of this incident while we work to bring the service back to optimum health.

2. resolved Dec 12, 2024, 05:18 PM UTC

   We’ve fixed it! Due to an unexpected service incident, users of SimCheck, Similarity, Originality, iThenticate 2.0, Crossref Similarity Check, and those accessing these services through integrations including Single-Sign-On, in the Asia Pacific region only, may have encountered problems accessing these services, logging in and uploading files. We are pleased to advise that service has been restored. The incident occurred between the following times: PST: December 12th, 07:25 - December 12th, 08:55 GMT: December 12th, 15:25 - December 12th, 16:55 AEDT: December 13th, 02:25 - December 13th, 03:55 We regret any inconvenience this may have caused if you were impacted by today’s incident.

Read the full incident report →

Started Dec 11, 2024, 03:30 AM UTC· resolved Dec 11, 2024, 04:47 AM UTC

1. identified Dec 11, 2024, 03:30 AM UTC

   We’ve run into some issues. Users of SimCheck, Similarity, Originality, iThenticate 2.0, and those accessing these services through integrations in the Asia Pacific region may encounter an unexpected service incident. During this time, you might experience delays in Similarity Report generation We invite you to track the progress of this incident while we work to bring the service back to optimum health.

2. resolved Dec 11, 2024, 04:47 AM UTC

   We’ve fixed it! Due to an unexpected service incident, users of SimCheck, Similarity, Originality, iThenticate 2.0, and those accessing these services through integrations in the Asia Pacific region may have experienced delays in Similarity Report generation. We are pleased to advise that the incident has been resolved. The incident occurred between the following times: PST: December 10th, 18:56 - December 10th, 20:43 GMT: December 11th, 02:56 - December 11th, 04:43 AEDT: December 11th, 13:56 - December 11th, 15:43 We regret any inconvenience this may have caused if today’s incident impacted you.

Read the full incident report →

Started Dec 09, 2024, 06:46 AM UTC· resolved Dec 09, 2024, 11:37 AM UTC

1. identified Dec 09, 2024, 06:46 AM UTC

   We’ve run into some issues. Turnitin, Turnitin UK, Draft Coach, iThenticate, Crossref, Turnitin Similarity, Originality, and Simcheck are currently experiencing an unexpected service incident. Users accessing these services through integrations may also be impacted. During this time, you may experience delays in Similarity Report generation. We invite you to track the progress of this incident while we work to bring the service back to optimum health.

2. monitoring Dec 09, 2024, 09:46 AM UTC

   A fix has been implemented and we are monitoring the results. We continue to work through the backlog from the incident.

3. monitoring Dec 09, 2024, 10:20 AM UTC

   The report generation incident impacting the following services Draft Coach, iThenticate, Crossref, Turnitin Similarity, Originality, and Simcheck, has now been resolved. A fix has been implemented, and we are monitoring the results. We continue to work through the backlog from the incident affecting Turnitin and Turnitin UK.

4. resolved Dec 09, 2024, 11:37 AM UTC

   We’ve fixed it! Due to an unexpected service incident, users of Turnitin, Turnitin UK, Turnitin Draft Coach, iThenticate, Crossref, Turnitin Similarity, Originality, and Simcheck, and those accessing the service via an integration may have experienced delays in Similarity Report generation. We are pleased to advise that the incident has been resolved. The incident occurred between the following times: PST: December 8th, 20:24 - December 9th, 02:46 GMT: December 9th, 04:24 - December 9th, 10:46 AEDT: December 9th, 15:24 - December 9th, 21:46 We regret any inconvenience this may have caused if today’s incident impacted you.

Read the full incident report →

Started Nov 18, 2024, 03:46 AM UTC· resolved Nov 18, 2024, 06:39 AM UTC

1. identified Nov 18, 2024, 03:46 AM UTC

   We’re experiencing some issues. Turnitin, Turnitin UK, iThenticate, Crossref, Turnitin Similarity, Originality, and Simcheck are currently experiencing an unexpected service incident. Users accessing these services through integrations may also be impacted. During this time, you may experience delays in Similarity Report generation. We invite you to track the progress of this incident while we work to bring the service back to optimum health.

2. resolved Nov 18, 2024, 06:39 AM UTC

   We’ve fixed it! Due to an unexpected service incident, users of Turnitin, Turnitin UK, iThenticate, Crossref, Turnitin Similarity, Originality, and Simcheck, and those accessing the service via an integration may have experienced delays in Similarity Report generation. We are pleased to advise that the incident has been resolved. The incident occurred between the following times: PST: November 17th, 16:00 - November 17th, 22:30 GMT: November 18th, 00:00 - November 18th, 06:30 AEDT: November 18th, 11:00 - November 18th, 17:30 We regret any inconvenience this may have caused if today’s incident impacted you.

Read the full incident report →

Started Nov 14, 2024, 10:41 PM UTC· resolved Nov 14, 2024, 11:25 PM UTC

1. investigating Nov 14, 2024, 10:41 PM UTC

   We’re experiencing some issues. Due to an unexpected service incident, Turnitin and Turnitin UK users may experience slowness and an error message when opening the top matching source of the Similarity Report. Users accessing the service via an integration may also be affected. We invite you to track the progress of this incident while we work to bring the service back to optimum health.

2. resolved Nov 14, 2024, 11:25 PM UTC

   We’ve fixed it! Due to an unexpected service incident, users of Turnitin, Turnitin UK, and those accessing the service via an integration may have experienced slowness and an error message when opening the top matching source of the Similarity Report. We are pleased to advise that the incident has been resolved. The incident occurred between the following times: PST: Wednesday, November 13th, 17:45 - Thursday, November 14th, 15:09 GMT: Thursday, November 14th, 01:45 - Thursday, November 14th, 23:09 AEDT: Thursday, November 14th, 12:45 - Friday, November 15th 10:09 We regret any inconvenience this may have caused if today’s incident impacted you.

Read the full incident report →

Started Nov 12, 2024, 08:03 PM UTC· resolved Nov 12, 2024, 08:32 PM UTC

1. identified Nov 12, 2024, 08:03 PM UTC

   We’ve run into some issues. Turnitin and Turnitin UK are currently experiencing an unexpected service incident. During this time, users may be unable to access the QuickMark manager or view QuickMarks. Users accessing the service via an integration may also be affected. We invite you to track the progress of this incident while we work to bring the service back to optimum health.

2. identified Nov 12, 2024, 08:07 PM UTC

   We are continuing to work on a fix for this issue.

3. resolved Nov 12, 2024, 08:32 PM UTC

   We've fixed it! Turnitin and Turnitin UK experienced an unexpected service incident. Users may have been unable to access the QuickMark manager or view QuickMarks. The incident occurred between the following times: PST: November 12th 11:05 - November 12th 12:13 GMT: November 12th 19:05 - November 12th 20:13 AEDT: November 13th 06:05 - November 13th 07:13 Users accessing the service via an integration may also have been affected. However, we are pleased to advise that the issue has been resolved. We regret any inconvenience caused.

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Started Oct 31, 2024, 04:36 PM UTC· resolved Oct 31, 2024, 11:41 PM UTC

1. resolved Nov 01, 2024, 12:55 AM UTC

   We ran into some issues. Turnitin has experienced an unexpected service incident. During this time, you may have found that users who are using Turnitin via the LTI 1.1 external tool experienced syncing delays with the service. We’ve fixed it and new submissions will not be impacted. The incident occurred between the following times: October 30th 09:36 PDT - October 31st 16:41 PDT October 30th 16:36 GMT - October 31st 23:41 GMT October 31st 03:36 AEDT - November 1st 10:41 AEDT We regret any inconvenience this may have caused if you were impacted by today’s incident.

Read the full incident report →

Started Oct 28, 2024, 04:52 PM UTC· resolved Oct 28, 2024, 07:15 PM UTC

1. investigating Oct 28, 2024, 04:52 PM UTC

   We’ve run into some issues. Turnitin, Turnitin UK, and iThenticate V1 are currently experiencing an unexpected service incident. Users accessing the service via an integration may also be affected. During this time you may experience intermittent slowness when accessing the service resulting in errors including when logging in, submitting and accessing reports. We invite you to track the progress of this incident while we work to bring the service back to optimum health.

2. resolved Oct 28, 2024, 07:15 PM UTC

   We’ve fixed it! Due to an unexpected service incident, users of Turnitin, Turnitin UK, and iThenticate V1 may have experienced intermittent slowness when accessing the service. This resulted in errors when logging in, submitting, and accessing reports. Users accessing the service 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: PDT: October 28th 07:30 - October 28th 12:05 GMT: October 28th 14:30 - October 28th 19:05 AEST: October 29th 01:30 - October 29th 06:05 We regret any inconvenience this may have caused if today’s incident impacted you.

Read the full incident report →