Update - We are continuing to investigate this issue.
Jan 10, 16:01 UTC
Investigating - We are currently investigating this issue.
Dec 13, 19:15 UTC
Monitoring - Several critical vulnerabilities were recently discovered in the Log4j software developed by the Apache Software Foundation and used by web server applications across the globe.

Crossref is aware of these vulnerabilities, and our team are working to mitigate them. We can currently see no exploitations of the vulnerabilities.
Dec 20, 21:41 UTC
APIs Operational
Public REST API ? Operational
Polite REST API ? Operational
OAI-PMH ? Operational
XML API ? Operational
Event Data Query API ? Operational
OpenURL ? Operational
Crossmark dialog server ? Operational
Content negotiation ? Operational
Metadata Plus Operational
Plus REST API ? Operational
Plus OAI-PMH ? Operational
XML Snapshots ? Operational
JSON Snapshots ? Operational
Sites Operational
Crossref website ? Operational
Crossref support ? Operational
Metadata search ? Operational
Participation reports ? Operational
Content Registration Operational
Admin tool ? Operational
Test admin tool ? Operational
External dependencies Operational
Handle servers ? Operational
Similarity Check via iThenticate from Turnitin - status found at https://turnitin.statuspage.io/ ? Operational
AWS cloudfront Operational
Meta Operational
deliberately-unreliable server ? Operational
Demo Auth ? Operational
Beta Operational
Metadata Manager ? Operational
Operational
Degraded Performance
Partial Outage
Major Outage
Maintenance
Public REST API Response Time
Fetching
Public REST API Uptime
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Polite REST API Response Time
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Polite REST API Uptime
Fetching
Plus REST API Response Time
Fetching
Plus REST API Uptime
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Plus OAI-PMH Response Time
Fetching
Plus OAI-PMH Uptime
Fetching
OpenURL Response Time
Fetching
OpenURL Uptime
Fetching
Content Negotiation Response Time
Fetching
Content Negotiation Uptime
Fetching
Crossmark Response Time
Fetching
Crossmark Uptime
Fetching
Event Data Query API Response Time
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Event Data Query API Uptime
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Crossref Metadata Search
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Past Incidents
Jan 19, 2022

No incidents reported today.

Jan 18, 2022

No incidents reported.

Jan 17, 2022

No incidents reported.

Jan 16, 2022

No incidents reported.

Jan 15, 2022

No incidents reported.

Jan 14, 2022

No incidents reported.

Jan 13, 2022
Resolved - This incident has been resolved.
Jan 13, 14:06 UTC
Monitoring - A fix has been implemented and we are monitoring the results.
Jan 12, 23:03 UTC
Investigating - Our data center connection went down for about 40 minutes starting at ~06:45 UTC today. All services and sites were affected. It is likely an upstream problem with our network provider. Things are back but we are investigating as a priority and looking to avoid it in the future.
Jan 12, 08:19 UTC
Jan 12, 2022
Jan 11, 2022
Completed - The scheduled maintenance has been completed.
Jan 11, 18:00 UTC
Update - We got a late start on today's release and may need additional time to complete the deployment. Our work should be completed by 1800 UTC.
Jan 11, 16:34 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Jan 11, 15:00 UTC
Scheduled - We will be undergoing scheduled maintenance - release v0.108.0 - on Tuesday, 11 January from 1500 to 1700 UTC. Our members may experience delays in deposit system admin tool (doi.crossref.org) processing. Deposits submitted during this time will be stored and processed after the maintenance has been completed.
Jan 10, 16:03 UTC
Jan 10, 2022

Unresolved incident: Crossref Metadata Search - search.crossref.org - intermittent performance issues.

Jan 9, 2022

No incidents reported.

Jan 8, 2022
Completed - The scheduled maintenance has been completed.
Jan 8, 08:00 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Jan 8, 00:00 UTC
Scheduled - The Similarity Check service will be unavailable for 8 hours while the Turnitin team undertake planned maintenance. Depending on your timezone, this will occur on Jan 7th or Jan 8th:.

PST timezone: Jan 7 16:00 – Jan 8 00:00
UTC timezone: Jan 8 00:00 – 08:00
AEDT timezone: Jan 8 11:00 – 19:00

You can monitor progress on Turnitin's status page here: https://turnitin.statuspage.io/incidents/5hffbb4lmqc9
Dec 13, 17:17 UTC
Jan 7, 2022

No incidents reported.

Jan 6, 2022

No incidents reported.

Jan 5, 2022

No incidents reported.