All Systems Operational
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
Scheduled Maintenance
We will be undergoing scheduled maintenance - release v0.93.0 - on Tuesday, 3rd August from 1400 to 1600 UTC. Our members may experience delays in deposit system admin (doi.crossref.org) and Metadata Manager (crossref.org/metadatamanager) processing. Deposits submitted during this time will be stored and processed after the maintenance has been completed.
Posted on Aug 2, 17:31 UTC
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Plus REST API Response Time
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Plus OAI-PMH Response Time
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OpenURL Response Time
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Crossmark Response Time
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Event Data Query API Response Time
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Crossref Metadata Search
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Past Incidents
Aug 3, 2021

No incidents reported today.

Aug 2, 2021

No incidents reported.

Aug 1, 2021

No incidents reported.

Jul 31, 2021

No incidents reported.

Jul 30, 2021

No incidents reported.

Jul 29, 2021

No incidents reported.

Jul 28, 2021

No incidents reported.

Jul 27, 2021
Completed - The scheduled maintenance has been completed.
Jul 27, 16:00 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Jul 27, 14:00 UTC
Scheduled - We will be undergoing scheduled maintenance - release v0.92.0 - on Tuesday, 27 July from 1400 to 1600 UTC. Our members may experience delays in deposit system admin (doi.crossref.org) and Metadata Manager (crossref.org/metadatamanager) processing. Deposits submitted during this time will be stored and processed after the maintenance has been completed.
Jul 26, 17:39 UTC
Jul 26, 2021

No incidents reported.

Jul 25, 2021

No incidents reported.

Jul 24, 2021

No incidents reported.

Jul 23, 2021
Resolved - This incident has been resolved.
Jul 23, 21:59 UTC
Monitoring - The script successfully completed its run at 20:14 UTC, Thursday, 22 July. In the end, we reverted the resource resolution URLs of 520,512 DOIs. We identified over 1.1 million potentially affected DOIs in our review. The other ~600,000 DOIs that were not reverted as a part of our reversion script were not reverted because the original files provided to us included errors (e.g., typos in the DOIs - many of the DOIs had never been registered and therefore could not have their resource resolution URLs reverted).
Jul 23, 15:05 UTC
Update - We've now processed all of the affected DOIs. We have reverted all of the inadvertently updated resource resolution URLs. The script completed its run at 20:14 UTC, Thursday, 22 July.
Jul 22, 20:35 UTC
Update - We're nearly 48 hours into our run in production to revert the resource resolution URLs of the DOIs affected by this issue. There are still no errors, and we have processed over 706,000 DOIs (well over half). We're on track to have all affected DOIs reverted by late Thursday/early Friday of this week.
Jul 21, 18:49 UTC
Update - We're over 24 hours into our run in production to revert the resource resolution URLs of the DOIs affected by this issue. So far we haven't had any problems and have processed over 320,000 DOIs. Based on this rate, all affected DOIs should be reverted by late Thursday/early Friday of this week.
Jul 20, 21:31 UTC
Update - We have begun reverting the resource resolution URLs of the DOIs affected by this issue.
Jul 19, 20:50 UTC
Update - Good news! Our third full test run of our script is error free. We will begin reverting resource resolution URLs for the 22 members affected by this error starting today.
Jul 19, 19:02 UTC
Update - We have completed two test runs to revert the resource resolution URLs of the DOIs affected by this mistake. Both tests have gone well, but turned up problems with our reversion script. We're currently running a third test run and will begin reviewing the results of that test later today. While we'd love to get the reversions to production resource resolution URLs kicked off as soon as possible and revert all of the mistakes now, we have decided that running additional tests is the best option for all affected members. Thus, we will not begin the reversion on production resource resolution URLs until Monday, 19 July at the earliest.
Jul 16, 18:28 UTC
Update - We are currently going through the results of our test run to revert all of the affected DOIs' resource resolution URLs to ensure there are no errors in our script. If that review goes smoothly, we should be able to begin the reversions in production starting tomorrow.
Jul 15, 19:33 UTC
Update - Our technical team continues to work on testing the URL reversion script to ensure that it is making the desired reversions and only the desired reversions to the affected content. We'll begin reviewing test results as a team tomorrow and hope to kick off the resource resolution URL reversions of the affected DOIs on Friday, 16 July.
Jul 14, 17:17 UTC
Update - Our technical team will begin testing their script to revert the affected resource resolution URL later today. We're still looking at the second half of the week before we begin making URL reversions. We have also confirmed the list of all affected DOIs and will be sharing that with the 22 affected members shortly.
Jul 13, 16:39 UTC
Update - Our technical team is continuing to work on a fix. We're anticipating reverting the incorrect resource resolution URLs of the over 1.1 million affected DOIs during the second half of this week. This is the first time we're attempting a reversion of resource resolution URLs, so we're taking our time to ensure we get it right.
Jul 12, 14:53 UTC
Identified - In the end, to be safe, we're reverting the attempted updates of over 1.1 million DOIs as a part of this large batch of URL updates. We have contacted the 22 members who were affected by this mistake, and have restored the correct ownership of all DOIs that were inadvertently transferred. The next and final step for this issue is to revert all of the URLs that were mistakenly updated to their former resource resolution URL. This type of correction is a first for our technical team, so it is taking them time to create a script to correct the affected DOIs' URLs. We'll provide more updates next week.
Jul 9, 21:29 UTC
Investigating - There has been a mistake in processing a large batch of URL updates. Around 600,000 records owned by 22 members may have incorrectly been transferred from one member to another member. Members cannot update other members’ records; we did this internally. We are investigating who the affected members are and looking at options to revert the erroneous transfers. In the meantime, records in Metadata Search and our APIs may be giving false ownership data. More information here as we have it and we will contact the individual members when they have been identified.
Jul 9, 14:12 UTC
Completed - The scheduled maintenance has been completed.
Jul 23, 20:00 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Jul 22, 20:00 UTC
Scheduled - We will be upgrading our database later today and tomorrow. Users of our Test admin tool - test.crossref.org - may experience intermittent performance issues during this time.
Jul 22, 19:38 UTC
Jul 22, 2021
Resolved - Turnitin has resolved this issue.
Jul 22, 18:36 UTC
Identified - Turnitin is working on a fix for Similarity Reports that are not currently generating. You can follow the status of their updates here: https://turnitin.statuspage.io/
Jul 22, 17:29 UTC
Jul 21, 2021
Jul 20, 2021
Resolved - This incident has been resolved.
Jul 20, 20:14 UTC
Monitoring - A fix has been implemented and we are monitoring the results.
Jul 20, 19:13 UTC
Identified - The issue has been identified and a fix is being implemented.
Jul 20, 18:19 UTC
Update - We are continuing to investigate this issue.
Jul 20, 17:14 UTC
Investigating - Today's deployment looks to have triggered errors with HTTP status code 500 on the XML API. We're investigating.
Jul 20, 17:09 UTC
Completed - The scheduled maintenance has been completed.
Jul 20, 16:01 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Jul 20, 14:02 UTC
Scheduled - We will be undergoing scheduled maintenance - release v0.91.0 - on Tuesday, 20 July from 1400 to 1600 UTC. Our members may experience delays in deposit system admin (doi.crossref.org) and Metadata Manager (crossref.org/metadatamanager) processing. Deposits submitted during this time will be stored and processed after the maintenance has been completed.
Jul 19, 15:22 UTC