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40.6%of 32 verified observed days had no reported provider issue
90-Day Trend
Dashed calendar markers below identify legacy observations whose source-at-observation was not recorded.
Monthly Status Summary
Month
Issue-free days
Days Tracked
Days with issues
September 2026
32%
25
17
This percentage summarizes normalized provider-status observations by calendar day. It is not duration-based, component-weighted, or contractual uptime. See the methodology and limitations.
Recorded Daily Status (Last 91 Days)
Jul 2Today
Legacy observation Operational Degraded Partial Outage Major Outage Maintenance No Data
Members attempting to access the test admin tool - test.crossref.org - are experiencing the following error: 'Error connecting to the authentication service. Please try again later or contact support.' Our technical team is investigating the issue.
A fix has been implemented and we are monitoring the results.
investigating
We had an issue with submission notifications going down around 0:00 UTC today. We re-enabled those submission notifications around 1000 UTC, but that has caused a delay in submission processing and notification delivery. As a result, processing of direct XML submissions either manually uploaded or posted to doi.crossref.org and submissions via our web deposit form - https://apps.crossref.org/webDeposit/ - are delayed. Our system is working through the backlog at the moment. -IF
Legacy Incident Archive
15 archived records restored. These records predate source-at-observation attestation. They are shown as historical ServiceAlert records only and do not establish a provider-reported incident, resolution, duration, or current active state.
May 2026
Bug identified, possibly resulting in failed submissions. Emergency maintenance scheduled.
minorSource not attested
Last archived state: resolved
View archived record details
monitoring
Emergency release version 0.274.2 has been released. We are monitoring the results.
identified
The issue has been identified and a fix is being implemented.
investigating
We are continuing to investigate this issue.
investigating
We have identified a bug in our system which may result in failing submissions at this time. An emergency release is scheduled for approximately 1900 UTC with a fix.
During the release, our members may experience delays in deposit system admin tool (doi.crossref.org) processing. Deposits submitted during that time will be stored and processed after the maintenance has been completed.
April 2026 JSON Snapshot is missing data for records created or updated on 4/29 and 4/30
minorSource not attested
Last archived state: resolved
View archived record details
identified
The corrected JSON snapshot is in process. It will be completed and available in the next 2-3 days.
identified
Due to problems with API indexing that occurred between 4/29 and 5/3, the current JSON snapshot for April 2026 is missing 1-2 days of data. We've resolved the indexing issue and are currently re-pushing the missing records into the API. Once that's completed, over the next few days, we'll build and release a new snapshot for April.
REST API Indexing Stalled since April 29th. Impacts on downstream services.
minorSource not attested
Last archived state: resolved
View archived record details
monitoring
Records are being indexed in the REST API as expected again. This includes the backlog of records that were affected by this incident.
investigating
We've resolved the issue. Records are being indexed in the REST API as expected again. This includes the backlog of records that were affected by this incident.
investigating
We are continuing to investigate this issue.
investigating
No newly created records have been index in REST API since 4/29. Our technical team is investigating.
Impacts on downstream services such as Crossmark, Participation Reports, Metadata Search, and Co-Access/Multiple Resolution interim pages.
April 2026
Main website down between 05:46 UTC and 06:47 UTC
criticalSource not attested
Last archived state: resolved
View archived record details
monitoring
The website is available again. We are monitoring the situation.
investigating
The main Crossref website (www.crossref.org) has been down since 05:46 UTC. We are investigating the cause of the issue.
A fix has been implemented and we are monitoring the results.
investigating
Our depositor reports (e.g., https://data.crossref.org/depositorreport?pubid=J533343) are returning status code 504 gateway timeout errors. We're aware of the issue and our technical team is investigating. -IF
