HubSpot Outlook Inbox And Calendar Tools Hit By Microsoft 365 Outage On November 12
HubSpot reported on November 12, 2026, that Outlook inboxes and calendar functions in its Sales Tools were partially unavailable across North America, Europe, and Asia Pacific. The HubSpot incident notice said the issue began at 12:30 a.m. EST and was related to an outage affecting Microsoft 365 services.
Sales Tools outage remained unresolved
HubSpot identified the incident at 2:05 p.m. EST and issued its latest public update at 10:03 p.m. EST on November 12. The company said it was working with Microsoft 365 to resolve the issue, linking customers to the Microsoft 365 service status page.
HubSpot’s status page listed Sales Tools as partially unavailable while the CRM, Marketing Tools, Website, Service Tools, Reports, HubSpot APIs, Integrations, Mobile, and Developer Tools components remained operational. The incident notice did not specify a HubSpot-side configuration change, API change, migration, or customer workaround. The incident was still listed as unresolved on November 13, 2026.
