Planned Maintenance and Status History
ESG Uptime for Last Quarter
| WebTrader Uptime | AS2 Uptime | Total ESG Uptime |
Overall | 100% | 100% | 100% |
Excluding Scheduled Outages | 100% | 100% | 100% |
Note: Target Service Level Agreement for ESG NextGen uptime is 99.5%. Uptime percentage reports on ESG NextGen uptime exclusive of FDA-wide outages.
System Configuration Change Notification
Major System Updates
ESG NextGen will provide advanced notification to industry users through the Unified Submission Portal (USP) and AS2 listservs for any upcoming user interface, major configuration, or major system change. This notification period allows for users to prepare, test, and provide feedback.
Minor System Updates
Outages due to ESG NextGen releases for minor new functionality or issue resolution, an email notification will be sent out through the USP and AS2 listservs at least one week in advance.
Planned Maintenance Updates
All planned maintenance updates will be posted here. This list of outages will be updated when changes to the schedule have been confirmed. Email notifications for planned maintenance updates will NOT be sent out. Please check back frequently to stay up to date.
| Maintenance Start Date | Maintenance End Date | Notes |
| Friday, January 9, 2026, 10 PM ET | Saturday, January 10, 2026, 12 AM ET | |
| Friday, January 16, 2026, 10 PM ET | Saturday, January 17, 2026, 12 AM ET | |
| Saturday, January 24, 2026, 2 AM ET | Saturday, January 24, 2026, 8 AM ET | |
| Friday, February 6, 2026, 10 PM ET | Saturday, February 7, 2026, 12 AM ET | |
| Tuesday, February 17, 2026, 9 PM ET | Wednesday, February 18, 2026, 2 AM ET | Potential for disrupted connection to USP and API. AS2 not impacted. |
| Saturday, February 21, 2026, 2 AM ET | Saturday, February 21, 2026, 8 AM ET | |
| Friday, February 27, 2026, 9 PM ET | Sunday, March 1, 2026, 6 AM ET | Potential for disrupted connection to USP and API. AS2 not impacted. |
| Friday, March 6, 2026, 9 PM ET | Saturday, March 7, 2026, 12 AM ET | |
| Friday, March 20, 2026, 10 PM ET | Saturday, March 21, 2026, 5 AM ET | |
| Saturday, March 28, 2026, 2 AM ET | Saturday, March 28, 2026, 8 AM ET | |
| Friday, April 3, 2026, 10 PM ET | Saturday, April 4, 2026, 12 AM ET | |
| Saturday, April 11, 2026, 9 AM ET | Saturday, April 11, 2026, 1 PM ET | |
| Friday, April 17, 2026, 10 PM ET | Saturday, April 18, 2026, 5 AM ET | |
| Sunday, April 26, 2026, 3 AM ET | Sunday, April 26, 2026, 6 AM ET | |
| Friday, May 1, 2026, 10 PM ET | Saturday, May 2, 2026, 12 AM ET | |
| Sunday, May 17, 2026, 3 AM ET | Sunday, May 17, 2026, 6 AM ET | |
| Friday, May 22, 2026, 10 PM ET | Saturday, May 23, 2026, 12 AM ET | |
| Friday, May 29, 2026, 10 PM ET | Saturday, May 30, 2026, 5 AM ET | |
| Friday, June 12, 2026, 10 PM ET | Saturday, June 13, 2026, 5 AM ET | |
| Sunday, June 21, 2026, 3 AM ET | Sunday, June 21, 2026, 6 AM ET | |
| Friday, June 26, 2026, 10 PM ET | Saturday, June 27, 2026, 12 AM ET | |
| Friday, July 10, 2026, 10 PM ET | Saturday, July 11, 2026, 5 AM ET | |
| Sunday, July 19, 2026, 3 AM ET | Sunday, July 19, 2026, 6 AM ET | |
| Friday, July 24, 2026, 10 PM ET | Saturday, July 25, 2026, 12 AM ET | |
| Friday, August 7, 2026, 10 PM ET | Saturday, August 8, 2026, 5 AM ET | |
| Sunday, August 16, 2026, 3 AM ET | Sunday, August 16, 2026, 6 AM ET | |
| Friday, August 21, 2026, 10 PM ET | Saturday, August 22, 2026, 12 AM ET | |
| Sunday, September 6, 2026, 3 AM ET | Sunday, September 6, 2026, 6 AM ET | |
| Friday, September 11, 2026, 10 PM ET | Saturday, September 12, 2026, 12 AM ET | |
| Friday, September 18, 2026, 10 PM ET | Saturday, September 19, 2026, 5 AM ET | |
| Sunday, October 4, 2026, 3 AM ET | Sunday, October 4, 2026, 6 AM ET | |
| Friday, October 9, 2026, 10 PM ET | Saturday, October 10, 2026, 12 AM ET | |
| Friday, October 16, 2026, 10 PM ET | Saturday, October 17, 2026, 5 AM ET | |
| Sunday, November 8, 2026, 3 AM ET | Sunday, November 8, 2026, 6 AM ET | |
| Friday, November 13, 2026, 10 PM ET | Saturday, November 14, 2026, 5 AM ET | |
| Friday, November 20, 2026, 10 PM ET | Saturday, November 21, 2026, 12 AM ET | |
| Sunday, November 29, 2026, 3 AM ET | Sunday, November 29, 2026, 6 AM ET | |
| Friday, December 11, 2026, 10 PM ET | Saturday, December 12, 2026, 12 AM ET | |
| Sunday, December 27, 2026, 3 AM ET | Sunday, December 27, 2026, 6 AM ET |
Please email ESGNGSupport@fda.hhs.gov✉️ if you would like to receive listserv notifications.