Cornerstone: Unable to login to the portal : US SL 5

Cornerstone · csod.comImpact: criticalResolved2026-09-01 14:15 UTC

Public — what happened

Summary

We have received confirmation from the CSOD Engineering team that the issue has been fixed and the service has been fully restored. Our Engineering team is currently monitoring the fix to ensure its reliability and stability. We will provide further updates if there are any additional developments.

Timeline

Started — 2026-09-01 14:02 UTC
Last update — 2026-09-01 14:15 UTC
Resolved — 2026-09-01 15:03 UTC

Source of record: provider status page. Mirrored as reported; times in UTC.

With SquidGrid — where it starts on the route

Independent path health

The status page is the symptom. SquidGrid measures the paths that reach Cornerstone against their own baselines — whether the routes carrying your traffic degraded, at which handoff, and who owns that stretch.

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Customers get the live Provider Assessment Report for Cornerstone: its full incident track record, what tends to break, and recent public reports of problems.

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Related: Cornerstone status & history. SquidGrid is not affiliated with Cornerstone.