Thomson Reuters incident
OneSource Indirect Tax Enterprise UI outage across UAT environments
Resolved after 25 minutes, affecting ONESOURCE Determination Enterprise Cloud (AWS AMER) and ONESOURCE Determination Enterprise Cloud (AWS EMEA), on June 18, 2026.
Dear Customers, We experienced disruption in accessing User Interface[ UI] across UAT environments in the ONESOURCE Indirect Tax Determination between 3:50 AM ET and 4:10 AM ET on June 18th. The issue is already mitigated now. We apologize for any inconvenience and appreciate your understanding and patience. Further details will be provided in the formal RCA. If you have any questions, please contact Customer Support.
Affected components
Update timeline
- investigating Jun 18, 2026, 08:15 AM UTC
We experienced outage in Loading the ONESOURCE Tax page - AMER, EMEA and OCI UAT environments starting 2:13 AM CT on May 18th. The issue is already mitigated. We apologize for any inconvenience and appreciate your understanding and patience. Further details will be provided in the formal RCA. If you have any questions, please contact Customer Support.
- resolved Jun 18, 2026, 08:41 AM UTC
Dear Customers, We experienced disruption in accessing User Interface[ UI] across UAT environments in the ONESOURCE Indirect Tax Determination between 3:50 AM ET and 4:10 AM ET on June 18th. The issue is already mitigated now. We apologize for any inconvenience and appreciate your understanding and patience. Further details will be provided in the formal RCA. If you have any questions, please contact Customer Support.
Your product runs on more than Thomson Reuters
Add the vendors you depend on and get one message when any of them reports trouble. Free for 3 vendors, no card.
Amazon Web Services