All Systems Operational
APIs Operational
Public REST API   ? Operational
Polite REST API   ? Operational
Plus REST API   ? Operational
OAI-PMH   ? Operational
Plus OAI-PMH   ? Operational
OpenURL   ? Operational
Crossmark dialog server   ? Operational
Content negotiation   ? Operational
XML API   ? Operational
Sites Operational
Crossref website   ? Operational
Crossref support   ? Operational
Metadata search   ? Operational
Content Registration Operational
Deposit system   ? Operational
Test deposit system   ? Operational
External dependencies Operational
AWS cloudFront   ? Operational
Handle servers   ? Operational
Meta Operational
deliberately-unreliable server   ? Operational
Beta Operational
Participation Reports   ? Operational
Event Data Query API   ? Operational
Metadata Manager   ? Operational
Operational
Degraded Performance
Partial Outage
Major Outage
Maintenance
Public REST API Response Time
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Public REST API Uptime
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Polite REST API Response Time
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Polite REST API Uptime
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Plus REST API Response Time
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Plus REST API Uptime
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Plus OAI-PMH Response Time
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Plus OAI-PMH Uptime
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OpenURL Response Time
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OpenURL Uptime
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Content Negotiation Response Time
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Content Negotiation Uptime
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Event Data Query API Response Time
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Event Data Query API Uptime
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Past Incidents
Nov 21, 2018

No incidents reported today.

Nov 20, 2018
Completed - The scheduled maintenance has been completed.
Nov 20, 15:00 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Nov 20, 14:00 UTC
Scheduled - We will be undergoing scheduled maintenance during this time. Our members may experience delays in deposit system admin (doi.crossref.org) and Metadata Manager (crossref.org/metadatamanager) processing. Deposits submitted during this hour will be stored and processed after the maintenance is completed.
Nov 19, 19:16 UTC
Nov 19, 2018
Resolved - Two Public REST API servers restarted earlier today around 04:45 UTC due to out of memory resets. As a result, users may have experienced sluggish performance from the Public REST API query from 04:45 to 06:45 UTC today.
Nov 19, 04:45 UTC
Nov 18, 2018

No incidents reported.

Nov 17, 2018

No incidents reported.

Nov 16, 2018

No incidents reported.

Nov 15, 2018
Resolved - This week we have been experiencing instability with our FTP server. Users may have experienced problems accessing GetMD data, daily status, depositor, and conflict reports. Issues with those services were resolved earlier today, Thursday, 15 November. We're currently investigating related problems with the myCrossref reports and hope to have those fixed later today.
Nov 15, 18:00 UTC
Nov 14, 2018

No incidents reported.

Nov 13, 2018

No incidents reported.

Nov 12, 2018

No incidents reported.

Nov 11, 2018

No incidents reported.

Nov 10, 2018

No incidents reported.

Nov 9, 2018
Resolved - Undesirable traffic caused an out of memory error to our servers at 6:45 am UTC Wednesday. The incident has been resolved and we have taken action to prevent this in the future.
Nov 9, 23:34 UTC
Investigating - search.crossref.org was down for five minutes at 6:45am UTC. It's up now but we are investigating the cause of the issue.
Nov 7, 09:29 UTC
Nov 8, 2018

No incidents reported.