All Systems Operational

Uptime over the past 90 days. View historical uptime.
Scheduler Operational
90 days ago
100.0 % uptime
Today
API Operational
90 days ago
100.0 % uptime
Today
Background Processing Operational
90 days ago
100.0 % uptime
Today
Developer Dashboard Operational
90 days ago
100.0 % uptime
Today
Major Calendar Providers Operational
Apple Operational
Google Operational
Microsoft 365 Operational
Outlook.com Operational
Conferencing Services Operational
GoTo Operational
Zoom Operational
Operational
Degraded Performance
Partial Outage
Major Outage
Maintenance
Major outage
Partial outage
No downtime recorded on this day.
No data exists for this day.
had a major outage.
had a partial outage.

No incidents or maintenance related to this downtime.

Jul 13, 2025

No incidents reported today.

Jul 12, 2025

No incidents reported.

Jul 11, 2025

No incidents reported.

Jul 10, 2025
Increased error rate communicating with Outlook.com calendars
Resolved - Microsoft Issue ID EX1112414 remains open however a preliminary root cause has been provided:

"A recent service update to an authentication component is unintentionally preventing access for a subset of users, resulting in intermittent service unavailability."

We've seen no further issues since our previous update and error rates remain consistent with healthy operations so we're going to consider this incident resolved.
Jul 10, 18:58 UTC
Update - As of 16:30 UTC we're seeing service levels back at their expected levels and a drastic reduction in error rates.

Outlook.com profiles are now authenticating consistently.

Microsoft Issue ID EX1112414 remains open however and so we'll continue to monitor things for a while longer in the expectation that this issue is now resolved but just to be sure.
Jul 10, 17:07 UTC
Update - Error rates remain fairly consistent and Microsoft are in the process of rolling out a fix.

We've yet to see the effects of this, are continuing to monitor, and will advise of any further changes.
Jul 10, 15:49 UTC
Update - Error rates remain fairly consistent.

We're continuing to monitor and will advise of any further changes.
Jul 10, 12:56 UTC
Monitoring - Error rates remain fairly consistent.

We're continuing to monitor and will advise of any further changes.
Jul 10, 11:05 UTC
Identified - We've ascertained that the issue isn't down to changes on our side and are tracking live issue with Outlook.com.

Microsoft are reporting on this as Issue ID EX1112414.

We can see that not all profiles are affected and that, of those that are, retries do eventually succeed.

We'll continue to monitor and advise of any further changes.
Jul 10, 10:14 UTC
Investigating - We've identified that some Outlook.com profiles may be increased error rates when authenticating with Microsoft's APIs, causing sync failures for those affected. This appears to be related to an ongoing issue with Outlook.com

We're investigating the root cause and will update this incident as we understand more.
Jul 10, 09:45 UTC
Jul 9, 2025

No incidents reported.

Jul 8, 2025

No incidents reported.

Jul 7, 2025

No incidents reported.

Jul 6, 2025

No incidents reported.

Jul 5, 2025

No incidents reported.

Jul 4, 2025

No incidents reported.

Jul 3, 2025
Increased error rate when syncing Google calendars
Resolved - Error rates have remained at normal levels and we believe the issue is over.

After two increases in error rates, at 14:24 UTC and 14:45 UTC, Google sync has remained stable. A minority of sync operations failed and were retried, eventually completing successfully.
Jul 3, 16:07 UTC
Monitoring - Error rates are still low and sync is working as expected. We are continuing to monitor the situation.
Jul 3, 15:36 UTC
Update - The error rate has remained low, but we are still investigating and monitoring.
Jul 3, 15:24 UTC
Update - Error rates have again returned to normal, and were affecting a fairly small number of operations spread across many accounts. We're continuing to investigate to try and find a pattern.
Jul 3, 15:09 UTC
Investigating - We are seeing the issue recur and are continuing to investigate.
Jul 3, 14:50 UTC
Monitoring - The error rate has returned to normal. This does not align with any changes or operations on our side, and the error returned from Google suggests this may have been a temporary issue on their side. We are continuing to investigate to try and identify a root cause, as well as monitoring the situation for any further changes.
Jul 3, 14:47 UTC
Investigating - We are seeing a sudden increase in Google sync errors and are investigating.
Jul 3, 14:36 UTC
Jul 2, 2025

No incidents reported.

Jul 1, 2025

No incidents reported.

Jun 30, 2025

No incidents reported.

Jun 29, 2025

No incidents reported.

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