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Smartsheet: Investigating errors using Login with Microsoft
Smartsheet reported a major incident affecting Login with Microsoft and Single Sign On ( Company Credentials ), starting 2025-10-29 16:56 UTC and resolved 2025-10-30 01:24 UTC, lasting 8 h 28 min. Customers experienced authentication errors attributed to an Azure incident and a third-party authentication provider; a fix was implemented before resolution.
Machine-written from the archived incident (Sol). Check the timeline before relying on it.
Affected components: Core Application - Single Sign On ( Company Credentials )Single Sign On ( Company Credentials )
Timeline of updates
- investigating
We are currently investigating some customer reports of an Authentication error with Microsoft due to an active Azure incident (https://azure.status.microsoft/en-us/status).
- identified
Azure has identified the issue and is working on a resolution (https://azure.status.microsoft/en-us/status).
- monitoring
A fix has been implemented and we are monitoring the results.
- resolved
This incident has been resolved.
- postmortem
Beginning on October 29th, 2025, from 8:41AM PDT, users experienced Azure/Microsoft login issues. The issue occurred due to a 3rd party authentication service provider. This was resolved by 5:05PM PDT.
Rewindex changes for this incident
- Major incident: Investigating errors using Login with Microsoft 2025-10-29 16:56 UTC
Impact, status and times are the vendor’s own, as last archived. View on stspg.io (opens in new tab). Smartsheet profile · Recent Smartsheet incidents · Markdown · JSON